Atypical outbreak of caprine cryptosporidiosis in the Sultanate of Oman

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Abstract
An outbreak of cryptosporidiosis occurred in goats ranging in age from two days to adult on a well‐managed closed farm. None of the other animals on the farm, including sheep, cows and buffalo, were affected. Morbidity approached 100 per cent in goats less than six months of age. Despite intensive supportive care, 238 goats died, ranging in age from two days to over one year. Cryptosporidia were detected in large numbers in the intestinal contents of dead animals and in faecal smears of animals with diarrhoea. Massive numbers of the organisms were also demonstrated histopathologically and by electronmicroscopy, and no other significant pathogens were detected. The outbreak was unique in terms of the extreme virulence of the organism, its apparent species‐specificity, and the shedding of the organism by animals over four weeks of age.