Kinetics of Cryptosporidium parvum sporozoite neutralization by monoclonal antibodies, immune bovine serum, and immune bovine colostrum

Abstract

Monoclonal antibodies, immune bovine serum, and immune bovine colostral whey neutralized infectivity of Cryptosporidium parvum sporozoites for mice in a time-dependent manner. Immune colostral whey neutralized sporozoites more rapidly and completely than immune serum, monoclonal antibody (MAb) 18.44, or a combination of MAb 18.44 and MAb 17.41. Mice were partially protected against oral challenge with C. parvum oocysts when treated with immune colostral whey, MAb 17.41, or a combination of MAb 17.41 and MAb 18.44.