cryptosporidiosis: an outbreak associated with drinking water despite state-of-the-art water determine the magnitude and source of an outbreak of cryptosporidiosis among persons with human immunodeficiency virus (hiv) infection and to determine whether the outbreak extended into the immunocompetent population.19968602703
cross-sectional study of faecal shedding of giardia duodenalis and cryptosporidium parvum among packstock in the sierra nevada range.faecal specimens from 305 horses and mules used as packstock at one of 17 commercial or governmental (national park service, us forest service) operations were examined for giardia duodenalis and cryptosporidium parvum using immunofluorescent microscopy. fourteen packstock (4.6%) were shedding g. duodenalis cysts, with herd-level prevalences ranging 0-22%. number of packstock in the corral, size of corral and density of packstock in the corral were associated with the odds of shedding g. duodena ...200010836481
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