active, multisite, laboratory-based surveillance for cryptosporidium parvum.cryptosporidium parvum leaped to the attention of the united states following the 1993 outbreak in milwaukee, wisconsin, which sickened 400,000 people. other outbreaks in the united states have been associated with drinking and recreational water, consumption of contaminated foods, contact with animals, and childcare attendance. despite its public health importance, the number of people who become infected each year is not known. in 1997, active surveillance for c. parvum was added to the foodbo ...200011037779
prevalence of parasites in fecal material from chlorinated swimming pools--united states, a result of the 1998 outbreak of infection with the chlorine-sensitive pathogen escherichia coli o157:h7 at a waterpark in georgia, many public health departments updated their guidelines for disinfecting pools following a fecal accident. many of these guidelines recommended treating all fecal accidents as if they contained the highly chlorine-resistant parasite cryptosporidium parvum, generally resulting in hyperchlorination and pool closures of up to a day. to determine whether fecal accide ...200111400955
the relationship of soil province to molecular characterization and phylogenetic analysis of cryptosporidium parvum isolated from calves in georgia.although cryptosporidium spp. are found throughout the world and in multiple environmental conditions, few data are available that explore the possibility of an association between specific environmental parameters and the species or strain of cryptosporidium. this study examines the potential association between a particular cryptosporidium species/strain found in calves and soil provinces in georgia, usa. necropsy cases spanning the years 1996-2002 were tested. no significant differences (p=0. ...200616516506
wide geographic distribution of cryptosporidium bovis and the deer-like genotype in bovines.recent studies in the united states reported that approximately 85% of pre-weaned dairy calves were infected with zoonotic cryptosporidium parvum, whereas only 1-2% of post-weaned calves and 1-2-year-old heifers were infected with this species. cryptosporidium bovis and cryptosporidium deer-like genotype were much more prevalent in the post-weaned animals. it is not clear whether the same infection pattern also occurs in other geographic areas. in this study, to determine whether the same crypto ...200717097231
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