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A total of 580 fecal samples from 30 cows and their calves from three dairy farms in São Paulo State, Brazil, was collected monthly over a period of 1 year (April 1994 to March 1995). A combination of water-ether centrifugal sedimentation technique followed by sucrose centrifugal flotation was used for neonatal samples and sucrose centrifugal flotation for the remainder of the samples. Cryptosporidium...