seroprevalence of cryptosporidial antibodies during infancy, childhood, and adolescence.cryptosporidium parvum causes mild to moderately severe diarrhea in immunocompetent individuals. cryptosporidial antibodies in the sera of 803 children seen at children's hospital of oklahoma were measured by means of an elisa. thirteen percent of children younger than 5 years of age were seropositive for antibodies to c. parvum. the seropositivity rate for children who attended day-care facilities was higher than that for those who did not. in addition, children in this age group with a history ...19948075261
environmental load of cryptosporidium parvum oocysts from cattle manure in feedlots from the central and western united states.the first step in assessing the risk of water contamination by cryptosporidium parvum oocysts from feedlot cattle (bos taurus) production systems is to quantify the number of c. parvum oocysts present in the fecal material deposited by feedlot cattle. our primary objective for this project was to estimate the daily environmental load of c. parvum oocysts in fecal material deposited by feedlot cattle from across the central and western usa. our secondary goal was to genotype isolates of c. parvum ...200616391291
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