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STUDENT DIGITAL NEWSLETTER ALAGAPPA INSTITUTIONS |
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Dorothy K. Grange, M.D.
The initial programs concentrated on the production of Tor khudree (Decaan Mahseer) and Tor mussullah (Mussulah Mahseer) but since 1995 anxiety icd 10 purchase 10mg buspirone fast delivery, the Lonavla Hatchery has been successfully producing fingerlings of Tor putitora (Golden Mahseer) anxiety symptoms nail biting 10mg buspirone mastercard, which is of concern to Nepal anxiety symptoms 6 dpo cheap 5 mg buspirone with amex. Conclusion and recommendations Promotion of small-scale aquaculture in Nepal will increase resilience of rural livelihood anxiety symptoms in head buspirone 10 mg low cost. In addition anxiety symptoms confusion buy buspirone 10mg overnight delivery, restoration of fish population in natural waterways will have a dramatic impact on poverty reduction owing to a vast network of waterways across the nation anxiety 025 order buspirone 5mg visa, which can make waters accessible by the most remote communities. While aquaculture is currently being restricted by the lack of access to waters, financial conditions of the poor and topography of the country, development of open water fisheries-with a focus on angling opportunities-could have far-reaching impacts on poverty reduction, especially among the most deprived communities. This means officially acknowledging that rivers and fish, which live in them, are also a vital ecosystem warranting the utmost attention. Awareness campaign needs to focus on government agencies involved in biodiversity conservation as well as other agencies working in Nepal. Lobby for a clearly designated agency to administer the Aquatic Animal Protection Act-1961. Raise awareness among local people on the harmful effects of consuming fish killed by poisoning. Develop partnerships with local fishermen and explore possibilities of community-based conservation of aquatic resources. This is a major factor for the sustainability of any effort, and this is where sport fishery comes in. Developing viable angling opportunities will create the much needed employment for local fishermen, enabling them to work as fishing guides and fish rangers. These guides/rangers must be given legal authority to enforce rules and regulations. Develop partnerships with hydropower projects to establish a national trust fund for producing indigenous fish and re-stocking natural waterways. Build partnerships with universities and research agencies to develop human resource in the field of open water fisheries management. One of the academic institutions needs to take the lead in this as they have a constant source of students who can give continuity to the research. This entails developing recreational sites both close to cities, which have the advantage of generating the awareness among the masses, and in remote areas, which can be promoted as adventure destinations. The most vital aspect of this endeavor is the maintenance of viable population of fish in these sites. It is also suggested that certain natural waterways, such as the stretch of Bagmati river above its dam in Sundarijal, be explored for the prospects of releasing trout species for developing angling opportunities. Fish fauna of the Narayani River system and their impact on the fishermen community in Chitwan, Nepal, in: Petr, T. Breeding of pond reared golden mahseer (Tor putitora) in Pokhara, Nepal, in: Petr, T. Fish species composition, number and abundance in different rivers and seasons in Nepal and the reevaluation of their threat category for effective conservation and management. Fish base study of the impacts of dams in different rivers of Nepal and its seasonal variations. Chemical pollution of the soil and groundwater in the Kingdom of Nepal, in: Jones, G. Proceedings of the Symposium held in Dresden, German Democratic Republic in March 1987. The status of cold water fish and fisheries in Nepal and prospects of their utilization for poverty reduction, in: Petr, T. An order was received to kill the residents and eighty (80) of them, men and women of all ages, were shot to death [at dusk]. Soon the heavy machine guns opened fire and the sight of those people screaming and falling to the ground is one I could not face even if I had had the heart of a monster. It is likely that the author removed this page when he returned to Japan during the war for fear that it might cause trouble with military censors. To make his handwriting legible, Hosaka copied the November 29 entry in clearer handwriting on a separate sheet of paper, which was then attached to the opposite page in the diary. The Tokyo War Crimes Tribunal investigated atrocities committed by the Japanese Army in the Rape of Nanking. Despite his reference to a major atrocity against Chinese civilians a week before the battle of Nanjing and in the general vicinity, officially the Rape of Nanking began on December 13th, the day the city fell, and was spatially confined to Nanjing and its immediate vicinity. In the early 1980s, Japanese journalist Honda Katsuichi claimed that the brutal behavior of Japanese troops in Nanjing was by no means an isolated incident as some in Japan claimed. Instead, it fit into a pattern of Japanese atrocities in the Lower Yangtze area against Chinese since the battle of Shanghai. Honda came to this conclusion after extensive interviews with Chinese survivors and examining existing Japanese records. The diary of Makihara Nobuo was discovered by a Japanese citizen group and published in 1988 together with the diaries of several other veterans. Makihara, a twenty-two year old private first class belonging to the 3rd Platoon of the Machine Gun Company of the 20th Infantry Regiment, 16th Division, wrote on November 29, 1937: Depart from the village at 9:00 a. Enter the town magnificently, passing an impressive temple (even though there are many temples in China). Because Wu Jing is an anti-Japanese stronghold, we carry out "mopping up" [st] operations in the entire town, killing all men and women without distinction. The enemy is nowhere to be seen, either because they have lost the will to fight after their defense line at Wu Xi was breached or they are holding strong positions further ahead. A squad leader in the Machine Gun Company of the 3rd Battalion (where Hosaka also served) named Kitayama also published his diary but did not record the massacre on that same day. This was probably due to the fact that he and another soldier went About the Cover I xi sightseeing near the hills. The diary of Hosaka Akira establishes beyond any reasonable doubt that a massacre of some eighty Chinese civilians was carried out by order by a Japanese unit equipped with heavy machine guns. It reconfirms the argument, first advanced by Japanese journalist Honda Katsuichi, that the Rape of Nanking was not an isolated incident, but fit into a pattern of atrocities since the battle of Shanghai. The bestselling book spurred a tremendous amount of renewed interest in Japanese wartime conduct in China, Korea, the Philippines, Southeast Asia, and the Pacific. Did the United States suppress evidence of the criminal responsibility of activity by the emperor to ensure a smoothly running occupation of Japan I am indebted to Carol Gluck and Gerhard Weinberg for their insightful comments on this essay. Thorough documentation of Japanese war crimes and criminal activities among these holdings seemed unavailable, leading to speculation of an official cover-up. Armed with this latest evidence and capitalizing on a heightened consciousness in the United States about Japanese wartime crimes, victims and advocates pressed their cases with more determination and with greater popular and political support than had been the case in years prior. American veterans who had been held captive by the Japanese renewed claims for justice and recompense, and wanted an official apology from the Japanese government for the institutionalized brutality under which they suffered during their long years in captivity. Ishii Shir,4 carried out army-sponsored experiments on humans for the purpose of developing effective biological warfare weapons. Japan was also called to account for its wartime use of slave labor or coerced workers. During the war years, the Japanese government forcibly removed workers from Korea, China, and elsewhere in Asia and shipped them to Japan as unpaid labor for dangerous work in coal mines and for heavy construction. When confronted by advocacy and human rights groups, the Japanese government insisted these issues had been settled by stipulations of the peace treaty signed in San Francisco in September 1951. Not only did Japanese authorities refuse to acknowledge any wartime responsibility, but several conservative politicians and senior bureaucrats went so far as to publicly denounce the accusations as groundless historical revisionism and Japan bashing. There was, of course, a domestic political dimension to the accusations (no candidate from the conservative ruling party could win an election by blaming Japan for a war of aggression), but the hardline official Japanese position created the impression in the United States that Japanese war crimes and related subjects such as war guilt or the role of Emperor Hirohito in the war were taboo subjects in Japan. Conversely, Japan rejected responsibility, downplayed the historical evidence of aggression and atrocity in its schools with sophistry and euphemism, and apologized to no one. Worse yet, ultra-conservative Japanese commentators insisted the war crimes, if they happened at all, were exaggerated to embarrass the Japanese people. As Daqing Yang points out in chapter 2, scholars and special interest groups in Japan have pursued the topic of Japanese war crimes with academic rigor, fervor, and commitment. Such views appear regularly in mainstream Japanese publications, although most of this work has had little impact in the West because it remains untranslated. Japanese writers, historians, and authors freely publish their work in mass circulation media where it is widely read and openly commented upon in a wide variety of opinion journals and the press. The rise of concern about Japanese war crimes in the 1990s reinforced the notion that most Japanese war criminals escaped punishment, either because the U. Ishii of Unit 731, who escaped postwar prosecution in exchange, apparently, for supplying the U. A convicted Class A war criminal, Shigemitsu Mamoru, a senior diplomat and foreign minister during the war years, regained the foreign minister portfolio in 1954. The controversial treatment of Emperor Hirohito by occupation authorities was a subject of debate in Japan and elsewhere since the late 1940s, and especially since the early 1990s in the United States. Although many notorious war criminals went unpunished and lived prosperous and prestigious lives, it is important to recognize that thousands of Japanese war crimes were prosecuted. The Tokyo War Crimes Tribunal, the counterpart of Nuremberg, began in May 1946 and ended in November 1948 with the conviction of twenty-five of these defendants. Seven, including Tj, were hanged, sixteen were sentenced to life imprisonment (of whom four died in prison), and two received lesser terms. Of the three remaining, two died during the proceedings, and one was declared unfit for trial. The Japanese government paroled all those imprisoned by 1956 and the Foreign Ministry released them unconditionally in April 1958. Americans, British, Australians, Dutch, French, Filipinos, and Chinese held trials at forty-nine locations between October 1945 and April 1956. The British prosecuted numerous Japanese for war crimes in Southeast Asia, including those involved in the construction of the ThaiBurma railway of death, immortalized as the Bridge over the River Kwai. Australian prosecutors worked in conjunction with British and American courts to bring Japanese to justice and tried large numbers of Japanese at Amboina, Dutch East Indies, and at Rabaul, New Britain. China tried at least 800 defendants, including some involved in Introduction I 7 the Nanjing massacre. The French brought to justice a Japanese civilian on Java who forced dozens of women into prostitution for the military authorities, and the Dutch condemned Japanese to death for the murder of indigenous people and Dutch prisoners. Of 5,379 Japanese, 173 Taiwanese, and 148 Koreans tried as class B and C war criminals for conventional crimes, violations of the laws of war, rape, murder, maltreatment of prisoners of war, about 4,300 were convicted, almost 1,000 sentenced to death, and hundreds given life imprisonment. Even the handful that reached the West during this period was so encumbered with communist Cold War propaganda that many questioned their veracity. For example, when the Soviets published the official court proceedings in 1950 of the December 1949 trials in Khabarovsk, they included Unit 731 related documents, but many in the West dismissed the verdicts along with the evidence as another in a series of long-running Stalinist show trials. Diligent efforts in Japan have uncovered extensive documentation related to Unit 731 and other war crimes, but the amount of material still remaining classified is unknown. Documents on Japanese War Crimes Responding to these concerns, on December 6, 2000, Congress passed the Japanese Imperial Government Disclosure Act (Public Law 106-567), which put to rest any doubt that U. The Japanese Imperial Government Records Disclosure Act provided for a fourth public member, but none was appointed. Baer, Richard Ben-Veniste, and Elizabeth Holtzman, gave willingly of their valuable time. Their shared characteristic was a determination to make the record available to the American people. An estimated 8 million pages of documents were declassified under the Nazi War Crimes Disclosure Act, whereas significantly fewer pages-100,000-were released under the Japanese Imperial Government Disclosure Act. There are many reasons for this Introduction I 9 discrepancy, most of which fall under two overarching explanations. First, the United States originally confiscated fewer documents pertinent to Japanese war crimes than to Nazi war crimes. At the time the Third Reich surrendered in May 1945, Allied armies occupied almost every inch of Germany. Document collection teams and specialists were on the scene and already confiscating Nazi records for use in announced war crimes trials. While the Germans, beginning in 1943, did engage in substantial efforts to obliterate evidence of such crimes as mass murder, and they destroyed a great deal of potentially incriminating records in 1945, a great deal survived, in part because not each one of the multiple copies had been burned. Imperial General Headquarters in Tokyo dispatched enciphered messages to field commands throughout the Pacific and East Asia ordering units to burn incriminating evidence of war crimes, especially offenses against prisoners of war. Documents discovered in an old safe in the burned-out Navy Ministry turned out to be Imperial Navy planning and policy papers from the 1930s. The salvaged materials reposed with the Metropolitan Police Agency in Tokyo, which transferred them in 1955 to the cabinet archives. Hattori Takushir, a wartime senior staff officer at Imperial General Headquarters, ordered subordinates to conceal key policy and operational documents from occupation authorities. Individuals also hid official documents or personal diaries, some of which came to light only decades later. For example, in 1989, Kaiksha, the association of former Imperial Japanese Army officers, published a history of the Nanjing operations together with a two-volume collection of contemporary military documents pertinent to the campaign. Nakajima Kesago, commander of the 16th Division at Nanjing, were published in a mass circulation monthly magazine in the early 1980s, with permission of the family. Unlike the German case, there was no one central repository for Asia-specific war crimes documentation.
Control: Prophylactic measures consist of eliminating fleas from the home and cestodes from pets anxiety symptoms mayo clinic cheap buspirone 5 mg otc. While recommended anxiety genetic effective 5 mg buspirone, watching small children to keep them from ingesting fleas is difficult anxiety of death cheap buspirone 10 mg otc. Part 1: the prevalence and comparison of burdens of helminths in adult and juvenile cats anxiety symptoms in young adults buspirone 5 mg overnight delivery. Rates of reinfection with Echinococcus granulosus anxiety symptoms mimic ms purchase buspirone 5mg overnight delivery, Taenia hydatigena anxiety symptoms urination order buspirone 10mg fast delivery, taenia ovis and other cestodes in a rural dog population in Uruguay. Gastrointestinal helminth parasites in stray cats from the mid-Ebro Valley, Spain. Etiology: the agent of this disease is the hydatid or larval stage of the cestodes Echinococcus granulosus, Echinococcus multilocularis, Echinococcus oligarthrus, and Echinococcus vogeli. While other species and subspecies of Echinococcus have occasionally appeared in the literature, their taxonomic status is doubtful or uncertain. The gravid proglottid, containing several hundred eggs, detaches from the strobila, is expelled with the feces, and disintegrates in the environment. Each egg contains an embryo (oncosphere) with six hooks (hexacanth), which must be ingested by an intermediate host to continue its development. Intermediate hosts are sheep, bovines, swine, goats, equines, camelids (Asian and American), cervids, and man. The oncosphere is released in the small intestine of the intermediate host, passes through the intestinal wall, and is carried by the bloodstream to various organs, where it undifferentiates and then differentiates again to develop the larval stage, called the hydatid. During the same period, brood capsules bud off from the germinative layer, and invaginated protoscolices, which constitute the infective agent of the parasite, develop within them. These capsules either adhere to the wall by means of a peduncle or float freely in the hydatid fluid. The capsules and the protoscolices that float freely in the hydatid fluid are known as "hydatid sand. In contrast, daughter hydatids with a two-layer wall like that of the mother sometimes form inside the hydatid. As the larva develops and the tissues of the host are compressed, the host responds with a fibrotic reaction, surrounding the larva with dense connective tissue, the adventitial layer. The most common localizations of these cysts are the liver (in about two-thirds of the cases) and the lungs (in about a fourth of the cases); on rare occasions they may become situated in some other organ, such as the kidneys, spleen, bones, and brain. The cycle is completed when a dog or other canid ingests the viscera of an intermediate host in which there are fertile hydatid cysts. A single cyst can give rise to thousands of adult cestodes because of the large number of scolices. For example, in Great Britain, two strains occur: an equine strain whose development cycle involves horses and dogs, and an ovine strain that circulates between sheep and dogs. In addition to the differences in morphology and development in the different intermediate hosts, the two strains also differ in biochemical and physiological characteristics. Even though dogs are definitive hosts for both, it seems that the equine strain is not transmitted to sheep and vice versa. In Australia, three strains are distinguished; one circulates between the dingo and macropodid marsupials (wallabies, kangaroos), and the other two (one continental and the other from Tasmania) circulate between dogs and sheep but differ in some biochemical, morphological, and biological properties (Thompson and Kumaratilake, 1982). Studies in the former Soviet Union have shown that the strain circulating between dogs and sheep is not infective for swine, and the strain circulating between dogs and swine is not transmitted to sheep. Recent molecular biology studies have confirmed the presence of four genotypes in Argentina: the ovine, circulating between sheep and humans; the ovine from Tasmania, circulating in sheep and humans; the porcine in swine; and the camelid in humans (Rozenzvit et al. The species are distinguished by subtle characteristics of the mature proglottid and by the number and shape of the hooks on the scolex. The natural definitive hosts are foxes, chiefly the arctic fox (Alopex lagopus) and the red fox (Vulpes vulpes). The intermediate hosts are wild rodents, primarily species of the genera Microtus, Clethrionomys, and Lemmus. Domestic dogs and cats may also serve as definitive hosts when they enter the cycle by feeding on infected wild rodents. The rodents develop the hydatid in the liver after ingesting eggs deposited with the fecal matter of definitive hosts; in about 60 days, the hydatid contains infective protoscolices. The vesicles are filled with a gelatinous liquid and generally lack protoscolices in humans. The absence of protoscolices seems to indicate that man is not a satisfactory host because, when a cyst is transplanted from man to a suitable rodent, the cyst begins to produce them. When a fox, dog, or cat ingests an infected rodent, the protoscolices give rise to the development of adult cestodes, which begin producing infective eggs that are eliminated in the fecal matter in about 33 days. The definitive hosts are wild felids such as pumas, jaguars, jaguarundis, and lynxes. The intermediate hosts are wild rodents such as the agouti Dasyprocta and possibly other rodents as well. This noninvasive cyst, which has multiple external compartments and abundant protoscolices, is generally called "polycystic. In some of these countries, the incidence has recently diminished notably because of control programs. The highest infection rates are recorded in countries with livestock industries, especially sheep raising, in rural areas, and among people of limited economic and cultural means. Moreover, it is necessary to distinguish between the infection, which may be asymptomatic, and the disease, which, by definition, is symptomatic. The most reliable sources of information on the incidence of the disease are the hospital records of surgical operations. In the 1960s, the annual incidence of surgical cases per 100,000 inhabitants was 1. However, these data paint an unrealistic picture, because prevalence refers to the total population of the country and not the rural population, which is the population at real risk for the infection. The prevalence of human cases was five times higher than that reported in 1980, when a control program was suspended (Moro et al. In other words, it was four times higher than the official figures reported (Serra Canales et al. The authors believe the apparent decrease is the result of problems in the reporting system. The prevalence of infection in the general population can be determined by various diagnostic methods. In Chile, a series of 115,819 autopsies performed between 1947 and 1970 uncovered 359 cases of human hydatidosis (310 per 100,000), and 108 (204 per 100,000) in 53,014 autopsies of individuals who died violent deaths. These figures on the prevalence of the infection are 25 to 40 times higher than the estimated prevalence of the disease for the same period. In the other Latin American countries, hydatidosis is not a health problem; some countries have sporadic cases and others have not reported the disease in humans. However, a significant percentage of the cases in California may be imported; Donovan et al. The Mediterranean coast of Europe constitutes one of the areas of highest prevalence, comparable only to the Southern Cone of South America. In Asia, the highest prevalences of infection are found in the southwest (Iraq and Turkey), in the southern republics of the former Soviet Union, and in China and Japan. In six provinces of China, 26,065 surgical cases of cystic hydatidosis were reported between 1951 and 1990, the majority after 1980. In Africa, the areas with the highest rates of infection are in Kenya and in the northwestern part of the continent. A recent survey carried out in Libya with ultrasound techniques found 339 abdominal infections in 20,220 individuals (1. Oceania is another area of high prevalence; the morbidity rate in humans in Australia is estimated at 1. From 1970 to 1980, 91 cases were diagnosed in France, equaling a prevalence rate comparable to the prevalences in Germany and Switzerland. The only region with a high prevalence (1% of the population) was Rebun Island, Japan, where effective control measures were established. However, since 1990 there has been a significant increase in the prevalence of human infection caused by this parasite in the northern part of Eurasia (Romig et al. Although it is not a very common infection, it is considered very important because mortality is higher than 90% without treatment, and treatment is very expensive (Eckert, 1996). In 1990, a study of 606 individuals drawn from the general population of the province of Gansu, China, found 8. A study using ultrasonography and serology conducted the following year confirmed the infection in 65 of 1,312 people (5%). Up to 1998, 86 cases of human polycystic hydatidosis had been diagnosed in Latin America, in the region between Nicaragua and Argentina; 32 were attributed to E. The cases of human polycystic hydatidosis reported in Argentina, Chile, Costa Rica, Nicaragua, and Uruguay are probably caused by E. In sheep, the most important intermediate host in many parts of the world, rates of infection are also high. The rate of hydatid cysts found in slaughterhouses in hyperendemic areas of Latin America varies from 20% to 95% of sacrificed animals. The highest rates are found in rural slaughterhouses, where older animals are slaughtered. In Argentina and Uruguay, hydatid cysts have not been found in horses; in Chile, the prevalence is low (0. According to some parasitologists, the strain that parasitizes horses is a special biotype of E. In other parts of the world, such as the Middle East, in addition to high rates in sheep, a high prevalence is found in camels, which are intermediate hosts, and in dogs, jackals, and wolves, which are definitive hosts. The symptoms generally appear when the larva grows large enough to compress or erode the neighboring tissues or ducts and interfere with their function. Absorption of parasitic antigens by the host often sensitizes the individual and may cause hypersensitivity phenomena. From this it is clear that the symptomatology of unilocular or cystic hydatidosis depends on the location of the cyst and its size. The most common location is the liver (65% to 70% of cases), followed by the lungs (about 25% of cases). There are indications that the localization of the hydatids may depend on the strain of E. In locations where growth of the cyst is not restricted by anatomical structures, it can reach a very large size and contain several liters of fluid. For example, rupture of the cyst by external trauma in hypersensitive patients can result in anaphylactic shock and pulmonary edema caused by rapid absorption of the antigen through the peritoneal or pleural serosa. Another serious consequence of cyst rupture is hydatid seeding within the abdominal or pleural cavity, and the formation of many new cysts in the serosa. Rupture of a cyst can also cause arterial embolisms in the lungs and sometimes in other organs. Early diagnosis in man is important for prevention of complications and rupture of the cyst, with its consequent seeding in multiple locations. For inoperable cases, treatment with mebendazole for several years is used, resulting in reduction of the cysts in several cases. The intraparenchymatous cysts cause atrophy of the surrounding tissue and, through pressure on the veins and biliary passages, provoke congestion and biliary stasis, which may be complicated by a secondary infection. A subcapsular cyst may grow upward (anterosuperior cyst) and adhere to the diaphragm, and the cyst may even cross the diaphragm and open into the thoracic cavity, or it may grow toward the peritoneal cavity, where it can adhere to and empty into the hollow abdominal viscera. In a study of 677 patients who had surgery for hepatic hydatid cysts, Hernando et al. The most common complication of surgery was a biliary fistula; the average period of hospitalization was 25 days and the mortality rate was 1. The average age of the patients was about 39 and the prevalence was the same in both sexes. The cyst is generally located in the lower lobe, and more frequently in the right lung than in the left. Expectoration of the cyst (hydatid vomica) occurs with some frequency in pulmonary hydatidosis and may be followed by recovery. Bone hydatidosis causes destruction of the trabeculae, necrosis, and spontaneous fracture. The latency period of cerebral hydatidosis is relatively short, about eight months in the general population and four months in children. In the vast majority of cases, the multilocular cyst is located in the liver and rarely in other organs. In general, the cyst starts as a small vesicle, which, by exogenous and endogenous proliferation of the germinative membrane, forms multiple vesicles in all directions, producing its multilocular appearance.
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Colonization of Ascaris lumbricoides eggs by the fungus Verticillium chlamydosporium Goddard health anxiety symptoms 247 buspirone 10 mg otc. An outbreak of ascariasis with marked eosinophilia in the southern part of Kyushu District anxiety symptoms forums discount 10 mg buspirone overnight delivery, Japan anxiety and sleep order buspirone 10mg with visa, caused by infection with swine ascaris anxiety explained cheap buspirone 5mg visa. Hepatic lesions caused by excretory and secretory products of Ascaris lumbricoides in golden hamster anxiety tattoos generic buspirone 10 mg with amex. Ascaris suum: A revision of its early migratory path and implications for human ascariasis anxiety symptoms nausea discount 10mg buspirone visa. Pulmonary infiltrates, asthma and eosinophilia due to Ascaris suum infestation in man. Natural patent infections have been found in two dogs, and rats, squirrels, and opossums have developed some specimens of adult ascarids in experimental infections. The females lay eggs in the small intestine; these are expelled with the feces and, in three to four weeks, develop into infective larvae. These eggs may be eaten by the raccoons themselves or by intermediate hosts such as rodents, rabbits, or birds. Young raccoons can become infected by ingesting infective eggs, but adult raccoons become infected only by ingesting the parasites in intermediate hosts. In young raccoons, the larvae develop first in the intestinal mucosa and then in the lumen; the eggs start to appear in the feces 50 to 76 days after infection. In adult raccoons, the larvae develop in the intestinal lumen and the eggs start to appear 32 to 38 days after infection. There is no extra-intestinal migration; transmission through the uterus or milk has not been studied. Geographic Distribution and Occurrence: the infection is presumed to occur in areas where raccoons live. Seventy-two percent of 1,425 raccoons studied in the state of Indiana, 82% of 310 raccoons in the state of Illinois, and 70% of 33 raccoons in the state of Texas were found to be infected (Kerr et al. Up until 1989, there were just two confirmed and two suspected cases of cerebral baylisascariasis and two cases of ocular baylisascariasis. Between 1989 and 2000, there were reports of one case of subacute diffuse unilateral neuroretinitis (Goldberg et al. The human infection seems to be identical to that found in laboratory animals, in which it has been shown that the B. The severity of the disease depends on the number, location, and activity of the larvae. A mild infection with a small number of larvae, which mostly encapsulate in the connective and muscular tissue, will probably not produce clinical manifestations. A more intense infection can cause the typical signs of visceral larva migrans: fever, leukocytosis, eosinophilia, hepatomegaly, and pneumonitis. Due to the size and motility of the larvae, any infection that causes symptoms of visceral larva migrans can probably also cause nervous symptoms. The symptoms appear two to four weeks after infection, and include lethargy, lack of muscular coordination, torticollis, ataxia, and nystagmus, which progress to stupor, coma, and death. Ocular cases occur when the larvae invade the eye; the symptoms include unilateral vision loss, photophobia, and retinitis. Tunnels have been observed in the retina at seven days postinfection in experiments in monkeys. In endemic areas, adult animals harbor 12 to 14 parasites and young animals harbor 48 to 62. There have been cases of symptomatic systemic or fatal infection caused by Baylisascaris larvae in puppies (Rudmann et al. Source of Infection and Mode of Transmission: the source of infection is infected raccoons, which can eliminate millions of eggs a day. Man is thought to become infected accidentally by ingesting food or water, or through hands contaminated with the feces of infected raccoons. Diagnosis: the human infection is suspected when symptoms of visceral larva migrans are accompanied by signs of alteration of the central nervous system, high peripheral eosinophilia, eosinophilia of the cerebrospinal fluid, and a history of exposure to raccoons. There are immunological tests for baylisascariasis, in particular, enzyme immunoassay and immunoelectrotransfer (Cunningham et al. The four human cases reported since 1994 were positive for Baylisascaris and negative for Toxocara, but one was positive for Ascaris. In raccoons, diagnosis of the infection is made by a finding of eggs in the feces or parasites in the feces or vomit. Control: According to the available information, human baylisascariasis is very rare, but its control is important because people tend to keep raccoons as pets and the disease has no treatment. If the examinations are positive, they should be treated with a medication effective against ascarids. Also, it should be borne in mind that the eggs can appear in the feces up to two and a half months after infection. In areas where raccoons are present, chimneys and other openings through which these animals can enter a dwelling should be sealed. Like those of the other ascarids, Baylisascaris eggs are highly resistant to external environmental factors and disinfectants. Cerebrospinal nematodiasis in a white-handed gibbon (Hylobates lar) due to Baylisascaris sp. Visceral larva migrans induced eosinophilic cardiac pseudotumor: A cause of sudden death in a child. Diagnosis and management of Baylisascaris procyonis infection in an infant with nonfatal meningoencephalitis. Morphometric, serologic, and epidemiologic support for Baylisascaris as a causative agent. The first fatal Baylisascaris infection in humans: An infant with eosinophilic meningoencephalitis. Baylisascaris procyonis larva migrans in a puppy: A case report and update for the veterinarian. Etiology: the agents of intestinal, hepatic, and pulmonary capillariasis are the nematodes Capillaria philippinensis, C. Its anterior extremity lodges in the mucosa of the small intestine in humans, particularly in the jejunum. The eggs are barrel-shaped and have opercula at both ends, very similar to those of Trichuris; they are eliminated with the feces, and when they enter fresh or contaminated bodies of water, they embryonate in 10 to 14 days and are ingested by a fish, in whose intestine they form infective larvae in approximately three weeks. If a larva is eaten by an appropriate host (man or a bird), it continues to develop, reaches the adult stage in about two weeks, and begins to lay larvae. They develop to maturity and lay eggs, which will begin the external infection cycle anew. However, some females continue laying eggs, which mature in the host intestine without leaving it. Although man is the only known host, it is thought that piscivorous birds are the natural hosts and that man is merely an accidental host who becomes infected by eating infected fish, which are the intermediate hosts (Cross and Basaca-Sevilla, 1991). In addition, experimental infections have been produced, using fish larvae, in monkeys and gerbils. To become infective, the eggs require a oneto two-month incubation period under favorable conditions of temperature, shade, aeration, and moisture. When the infective eggs are again eaten by a rodent, the larvae are released in the intestine, enter the intestinal wall, and are carried through the bloodstream to the liver, where they mature in approximately a month. Its anterior extremity lodges in the mucosa of the trachea and bronchi of foxes, dogs, coyotes, and more rarely, other wild animals or cats. The eggs enter through the airways, are carried by the cilia and by coughing to the pharynx, are swallowed, and are eliminated with the feces. When an appropriate host, such as a fox or dog, ingests the eggs, the larvae are released into the intestine and migrate through the bloodstream to the lungs in 7 to 10 days. During the next five years, more than 1,500 cases were reported, with a 6% fatality rate. Aside from the Philippines, the most affected country seems to be Thailand, where 17 reported cases were reviewed (Peng et al. From 1989 to 2000, 41 cases were reported throughout the world: 3 in Egypt, 1 in the United Arab Emirates, 2 in Spain, 1 in Greece, 1 in India, 1 in Indonesia, 3 in the Republic of Korea, 20 in Thailand, and 9 in Taiwan. Besides rodents, the parasite has occasionally been found in other species of domestic and wild mammals. From 1989 to 2000, 10 other cases were reported: 1 in Germany, 1 in Japan, 3 in Mexico, 1 in the Republic of Korea, 3 in Switzerland, and 1 in Yugoslavia. Up until 1977, there were only nine known cases of human infection: one in Iran, one in Morocco, and seven in the former Soviet Union (Aftandelians et al. The disease begins with insignificant symptoms such as borborygmus and vague abdominal pains. Intermittent diarrhea, which becomes persistent as the disease progresses, begins in two or three weeks, along with marked weight loss and cachexia. Gastrointestinal function is seriously affected; in addition, malabsorption and the loss of large quantities of protein, fat, and minerals have been confirmed. Death occurs as a result of heart failure or an intercurrent infection a few weeks or months after the onset of symptoms (Cross, 1992). Clinical cases of hepatic capillariasis are due to a massive invasion of the liver by C. A prominent sign is hepatomegaly; other very common symptoms are high morning fever, nausea, vomiting, diarrhea or constipation, abdominal distension, edema of the extremities, splenomegaly, and sometimes pneumonia. A large part of the symptomatology is due to secondary infections in weakened patients, most of them children. In a case in an adult from Nigeria, the most prominent pathological feature was severe hepatic fibrosis and functional disorders related thereto (Attah et al. Laboratory examinations find hyperleukocytosis with eosinophilia and hypochromic anemia, with abnormal values in liver function tests. Autopsy reveals the presence of grayish-white nodules on the surface of the liver. Subclinical human infections undoubtedly occur, as attested to by solitary hepatic granulomas found in nine individuals autopsied during a study in the former Czechoslovakia. In seven of the nine cases, only one parasite larva was found in the lesions (Slais, 1973). Biopsy reveals granulomatous lesions with cellular reaction to a foreign body (Aftandelians et al. Experimental infection in primates of the genus Macaca or in wild rats is asymptomatic. Although hepatic capillariasis does not have a high mortality rate, it could contribute to the control of rodent populations (McCallum, 1993). Intense infections can cause rhinitis, tracheitis, and bronchitis, which may end in bronchopneumonia caused by a secondary bacterial infection. Source of Infection and Mode of Transmission: Man is the only known definitive host of C. The main source of infection for humans seems to be infected fish, and the manner of infection is the ingestion of undercooked fish. Contamination of bodies of water with the excreta of humans or the birds that serve as hosts ensures perpetuation of the cycle. The infection is transmitted by ingestion of embryonated eggs that have been released from the liver of rodents and disseminated through the external environment by carnivores. In the peridomestic environment, the disseminating agents can be cats and dogs that hunt rodents. The eggs can also be released by cannibalism among rodents or by death and decomposition of their cadavers. For man, the source of direct infection is the soil, and the source of indirect infection is contaminated hands, food, or water. There are more than 30 described cases of spurious infections due to the ingestion of raw liver of rodents or other mammals, such as squirrels, monkeys, and wild boars, infected with unembryonated eggs. In such cases, the eggs of the parasite pass through the human digestive tract and are eliminated with the feces without causing true infection. Children probably acquire the infection by ingesting dirt or water and food contaminated with eggs. Coprologic examination confirms the diagnosis, though a series of them may be necessary. A specific diagnosis of hepatic capillariasis is suspected from the presence of fever, hepatomegaly, and eosinophilia in a patient in an endemic area. Confirmation can be obtained only from liver biopsy and identification of the parasite or its eggs. Diagnosis of pulmonary capillariasis can be obtained by confirmation of the presence of eosinophils or the typical eggs in the sputum, or by biopsy of pulmonary tissue in which larvae or aspirated eggs can be found. Control: In endemic areas, intestinal capillariasis can be prevented by refraining from eating raw or undercooked fish. Patients should be treated with thiabendazole, both for therapeutic reasons and to decrease the dissemination of parasite eggs. Hepatic capillariasis is a geohelminthiasis in which the eggs develop to the infective stage in the soil; they then penetrate the host orally through contaminated food or water or, in the case of man, via contaminated hands that are brought to the mouth or handle food. Consequently, individual prevention consists of carefully washing suspected foods and avoiding eating them raw; boiling both water and suspected foods; and washing hands carefully before eating. Young animals, which are the most susceptible and have the largest parasite burden, must be separated from adults. Any infection must be treated as soon as possible to prevent contamination of the environment with the eggs.
In the second situation anxiety symptoms psychology buspirone 5mg with visa, the infection is acquired on the banks of saltwater bodies anxiety effects buspirone 5mg low cost. In these cases anxiety symptoms mind racing buy buspirone 10mg mastercard, the parasites generally belong to the genera Australobilharzia anxiety symptoms muscle tension purchase 10mg buspirone otc, Gigantobilharzia anxiety meme buy 5mg buspirone mastercard, Microbilharzia anxiety symptoms quiz cheap 5mg buspirone with mastercard, or Ornithobilharzia, which infect marine or migratory birds and develop in marine snails such as Ilyanassa. In the third case, the infection is acquired in rice fields and floodlands inhabited by parasites of domestic animals and wild rodents, such as Schistosoma spindale, a species that affects bovines and wild rats (Inder et al. As treatment is purely symptomatic and does not exclude the existence of other allergic conditions, successful treatment does not help to confirm the infection. Although various serum immunologic tests can establish the diagnosis (fluorescence test, cercarial Hullen reaction, circumoval precipitation, etc. Indirect immunofluorescence and enzyme-linked immunosorbent assay, employing commercially available human schistosome antigens, have been used to diagnose the infection, but the results are less sensitive (Kolarova et al. The population of snails in pools, rice fields, or irrigation canals can be controlled with molluscicides (Kolarova et al. In the case of small natural ponds, clearing the vegetation from the banks will create a less favorable environment for snails and removing the mud from the bottom will eliminate them. Use of praziquantel baits has been recommended to eliminate the mature parasites of fowl, but three 200 mg doses daily per duck are needed to produce a permanent reduction in the excretion of eggs. In Japan, rice-field workers and other individuals have been protected with copper oleate, which is applied to the skin and allowed to evaporate. It is recommended that swimmers dry off vigorously as soon as they emerge from the water, since the cercariae are better able to penetrate the skin when it is allowed to air dry slowly. Direct and sequential switching from mu to epsilon in patients with Schistosoma mansoni infection and atopic dermatitis. Public health importance and risk factors for cercarial dermatitis associated with swimming in Lake Leman at Geneva, Switzerland. Cercaria-schistosomulum surface transformation of Trichobilharzia szidati and its putative immunological impact. Studies on animal schistosomes in Peninsular Malaysia: Record of naturally infected animals and additional hosts of Schistosoma spindale. Serodiagnosis of cercarial dermatitis with antigens of Trichobilharzia szidati and Schistosoma mansoni. The epidemiology of cercarial dermatitis and its association with limnological characteristics of a northern Michigan lake. Case report of cercaria dermatitis caused by Trichobilharzia (Digena, Schistosomatidae). It lives in the bile ducts of humans, pigs, cats, dogs, rats, and several other species of fish-eating mammals. Some authors place it in the genus Opisthorchis because adults of the genera Clonorchis and Opisthorchis are similar in appearance, but there are clear differences in the preadult stages. Moreover, the name Clonorchis has been used in the medical literature since 1907, so retaining it seems justified. The first is any of several operculate aquatic snails, such as species of Alocinma, Bulimus, Melanoides, Parafossarulus, and Semisulcospira. The second intermediate host is any of more than 100 species of freshwater fish (often members of the family Cyprinidae), only about a dozen of which are regularly consumed by humans. If the eggs reach fresh water (rivers, lakes, lagoons, reservoirs, ponds) and find appropriate intermediate hosts, their development continues. The snail ingests the eggs, which hatch in the intestine and release ciliated larvae, or miracidia. The miracidium penetrates the intestinal wall, invades the digestive gland (hepatopancreas), and becomes a sporocyst, which produces other larvae, the rediae. After a redia leaves the sporocyst, it produces still other pre-adult larvae, the cercariae. Multiplication of larvae in the pre-adult stages is called pedogenesis, and is characteristic of trematodes. A cercaria penetrates the skin of a fish, loses its tail, and forms a resistant wall around its body. The metacercariae become infective for the definitive host in approximately one month. The juvenile parasite penetrates the ampulla of Vater and moves against the bile flow towards the bile ducts. After three to four weeks, the parasite reaches sexual maturity and begins to lay eggs, and the life cycle begins anew. The entire life cycle is completed in around three months, but the mature parasites can live for up to 40 years. In several countries of the world, sporadic cases have been diagnosed in immigrants from and in people who had visited the endemic area. Occurrence: Human infection appears to be ancient, as eggs of the parasite have been found in human remains 2,600 years old. The prevalence among humans is estimated at between 7 and 30 million cases in the endemic area, with some 20 million people believed to be infected in southeastern China alone. Although the first human case in the Republic of Korea was not diagnosed until 1915, C. In 1997, stool sample examinations in that country showed a human infection rate of 11. Nevertheless, this situation represents an improvement over that of several decades ago (Joo et al. In all the endemic areas, the infection has been found to be more prevalent among males than females and among adults than children. These findings are attributed to the fact that the most affected groups are those that eat raw fish most often. The Disease in Man and Animals: the symptomatology of the disease depends on the number of parasites, the length of time the infection has persisted, and whether continuous reinfections have occurred. In general, when the infection is mild and recent, there are no manifestations of disease. When the infection is more intense and of longer duration, the patient may exhibit loss of appetite, diarrhea, a sensation of intra-abdominal pressure, fever, and eosinophilia. In the heaviest and oldest infections, there may also be enlargement and tenderness of the liver, obstruction of the bile ducts, and even cirrhosis, with edema and ascites. The principal types of damage produced by chronic clonorchiasis are hyperplasia of the mucus-secreting epithelium of the bile ducts, localized dilation of the ducts, and lymphocytic and eosinophilic inflammation of the periductal region, which eventually leads to fibrosis. The changes are attributed to irritation and to a 24-kD cysteine proteinase produced by the parasite (Park et al. A common complication is recurrent pyogenic cholangitis, which results from obstruction of the bile ducts. Clonorchiasis is often cited as a predisposing factor for the formation of gallstones, but Hou et al. Source of Infection and Mode of Transmission: Studies conducted in China, where the distribution of the parasitosis is uneven, have shown that human infection with C. The primary factor limiting the distribution of the disease is availability of the first intermediate host because only a small number of snail species are susceptible to the parasite. Parafossarulus manchouricus is the main host in China, Japan, the Republic of Korea, and Vietnam, but some other species are also susceptible. The second intermediate host is less of a limiting factor, since more than 100 species of freshwater fish and several species of shrimp can harbor the developing parasite. The reservoirs of the parasite are humans, swine, cats, dogs, rats, and several other fish-eating mammals. Persistence of the infection in nature is fostered by the presence of these reservoirs in the same ecological environment as the intermediate hosts-without which they would not have become infected-and the fact that they eliminate several thousand eggs per gram of feces every day. The use of human feces to fertilize carp ponds, a common practice in China, has also helped keep the infection active. When the parasite burden is light, it is advisable to use egg concentration methods to examine stool samples. Some authors recommend the zinc sulfate flotation method, but many operculate eggs tend to sediment in saline solutions. The parasite burden can be evaluated by counting the eggs in feces by means of the Stoll dilution method (Rim, 1982). In humans, up to 100 eggs per gram of feces constitutes a light infection; between 100 and 1,000 eggs, a moderate infection; and more than 1,000 eggs a heavy infection (Manson and Apted, 1982). However, several other trematodes in Southeast Asia that occasionally infect man. Examination of the surface structure of the egg by electronic microscopy is a more reliable way to identify the parasite but is difficult to perform in the clinical environment. Clinical imaging studies, such as cholangiography, sonography, and computerized tomography, may show shapes that suggest infection (Lim, 1990). However, the sensitivity and specificity of these techniques, at least in the case of sonography, appear to be inadequate. The intradermal test shows immediate hypersensitivity and is simple, but it does not indicate if the infection is current. In one study, immunoenzymatic staining and indirect immunofluorescence using frozen sections of the parasite showed sensitivities of 92% and 88%, respectively, and high specificity: 2% false positives with the first technique and 4% with the second (Liu et al. Cross-reactions with cases of acute schistosomiasis, chronic schistosomiasis, and paragonimiasis were observed in 14%, 5%, and 0% of cases using immunoenzymatic staining, and in 14%, 10%, and 0% using indirect immunofluorescence. IgA antibodies were found to have decreased significantly after a month of successful treatment, which indicates that this test can be used to evaluate the results of treatment. Control: the most effective control measure is probably to refrain from eating undercooked fish in endemic areas. Human clonorchiasis does not exist in northern China, where people do not eat raw fish, although it is prevalent in pigs, cats, dogs, and rats in that region. Fish infections can be reduced by allowing human fecal matter to ferment for several weeks before it is used to fertilize fish-culture ponds, as the fermentation process kills C. Treating the population with praziquantel every six months also significantly reduces the passage of eggs into the environment. However, elimination of vegetation from the edges of ponds during the spring and summer will benefit predators that eat snail larvae, which in turn will reduce the population of first intermediate hosts. Comparative morphology of eggs of the Haplorchiinae (Trematoda: Heterophyidae) and some other medically important heterophyid and opisthorchiid flukes. Viability of metacercariae of Clonorchis sinensis in frozen or salted freshwater fish. Epidemiologic characteristics of Clonorchiasis sinensis in Guandong Province, China. Egg positive rates of Clonorchis sinensis and intestinal helminths among residents in Kagye-ri, Saengbiryang-myon, Sanchong-gun, Kyongsangnam-do. The ultrasound survey of gallstone diseases of patients infected with Clonorchis sinensis in southern Taiwan. Image analytical observation on the growth and development of Clonorchis sinensis in rats. Hepatitis B and C virus, Clonorchis sinensis for the risk of liver cancer: A case-control study in Pusan, Korea. They live in the bile ducts of sheep, goats, cattle, and, less frequently, other domestic and wild ruminants. The first is a land snail (38 species, among them Cionella lubrica in North America, Zebrina detrita and Helicella candidula in Europe, and Bradybaena similaris in Malaysia), and the second is an ant (12 species, among them Formica fusca in Germany and North America, F. They are transported by bile and fecal matter to the exterior, where the first intermediate host ingests them. The egg, which is quite resistant to desiccation, releases the miracidium only when it is ingested by a snail. The miracidium forms two generations of sporocysts in the digestive gland of the snail, the second of which produces numerous cercariae, which are expelled from the snail through the respiratory chamber after about three to four months. Each ant may contain between 38 and 76 metacercariae, depending on the species and size of the insect (Schuster, 1991). It will then bite down and suffer a spasm of the jaw musculature, making it impossible for the ant to let go. Thus trapped high on the vegetation, the ant is likely to be eaten by a definitive host. When herbivores consume infected ants while grazing, the metacercariae excyst in the duodenum and the juvenile parasites travel against the bile flow to the bile ducts. The first intermediate host is a pulmonate land snail of the genus Limicolaria, and the second is an ant of the genus Camponotus, in which the metacercariae develop. The definitive hosts are domestic herbivores (cattle, sheep, goats) and probably also wild ruminants (Frank et al. Prevalence rates of 40% have been reported in domestic animals in France, 80% in Poland, 46% in Switzerland, 100% in Yugoslavia, and 75% in goats in the Russian Federation. In Greece, parasite eggs were found in 2 of 232 dogs, but there is some doubt as to whether these were true D.