BOVINE COLOSTRUM HAS BEEN USED SIMILARLY TO ANTISERA AND HUMAN IMMUNOGLOBULIN PREPARATIONS TO PROVIDE PASSIVE IMMUNITY AGAINST INFECTIOUS DISEASES. HYPERIMMUNE BOVINE COLOSTRA HAVE BEEN PREPARED FROM COWS PREVIOUSLY IMMUNISED WITH SPECIFIC ANTIGENS. IN PARTICULAR, THESE SPECIFIC HYPERIMMUNE BOVINE COLOSTRA HAVE BEEN TRIED IN CRYPTOSPORIDIOSIS AND IN THE PREVENTION OF ROTAVIRUS DIARRHOEA IN INFANTS. THEY MAY ALSO HAVE POTENTIAL FOR USE AGAINST HELICOBACTER PYLORI, SHIGELLA SPP., AND MEASLES.