a comparison of four fluorescent antibody-based methods for purifying, detecting, and confirming cryptosporidium parvum in surface waters.cryptosporidiosis has been traced to drinking contaminated surface water, which was either not treated or was ineffectively treated. testing to detect cryptosporidium parvum in surface water has been suggested to help prevent future outbreaks. in the present study, the same sample collection and filtration methods were used to compared sample processing and detection steps from 4 testing methods: a modified information collection rule (icr) method and method 1623 (both developed by the u.s. envi ...200111695378
manufacturer's recall of rapid cartridge assay kits on the basis of false-positive cryptosporidium antigen tests--colorado, 2004.the colorado department of public health and environment (cdphe) has determined that a fourfold increase in the number of reported cryptosporidiosis cases in colorado during january-february 2004 might be attributed primarily to false-positive test results. since january 1, 2004, a total of 13 in-state cases and one out-of-state case were reported to cdphe. during the previous 7 years, an average of three cases were reported during january-february. in eight of 14 patients, rapid testing was per ...200415017377
epidemiologic and environmental investigation of a recreational water outbreak caused by two genotypes of cryptosporidium parvum in ohio in august 2000, the ohio department of health requested assistance to investigate a cryptosporidiosis outbreak with more than 700 clinical case-patients. an epidemiologic and environmental investigation was conducted. stool specimens, pool water, and sand filter samples were analyzed. a community-based case-control study showed that the main risk factor was swimming in pool a (odds ratio [or] = 42, 95% confidence interval [ci] = 12.3-144.9). this was supported by results of polymerase chain reac ...200415569788
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