Foreign animal disease agent survival in animal products: recent developments
Blackwell, J.H.
Journal of the American Veterinary Medical Association 184(6): 674-679
1984
ISSN/ISBN: 0003-1488 PMID: 6327587 Document Number: 230927
Animal health authorities and private practitioners should be aware that small fractions of certain exotic virus populations may survive processing in a large variety of products, in infective amounts. Although sensitive to the pH changes in skeletal muscle, foot-and-mouth disease virus persists in lymph nodes, clotted blood, and bone marrow for up to 4 months. Swine vescular disease virus survives in swine carcasses for 11 months. African swine fever virus persists in excess of 5 months in frozen bone marrow. Retort cooking of canned meat products infected with exotic viruses provides adequate sterilization. In milk from infected lactating cows, foot-and-mouth disease virus is readily detected before the onset of clinical foot-and-mouth disease. When present in milk of lactating cows as a result of infection, the virus survives pasteurization and/or acid development of butter, casein, cheese, and sweet whey.