Recombinant Cryptosporidium parvum p23 as a target for the detection of Cryptosporidium-specific antibody in calf sera.

Cryptosporidium parvum is a widely distributed coccidian parasite and causes enteric disease in humans and animals. In addition to being a cause of life-threatening disease in immunodeficient people, mostly AIDS patients, C. parvum has been reported as a common serious primary cause of outbreaks of diarrhea in newborn calves, especially newborn ruminants (De Graaf et al.