African Swine Fever

African swine fever (ASF) is a serious viral disease of pigs, endemic in Africa. The African swine fever virus (ASFV) is highly contagious, and can spread very rapidly in pig populations by direct or indirect contact. This virus can persist for long periods in pig products and the environment. ASF is not a public health concern.

Clinical signs may include high fever, high death loss, piling, skin discoloration and abortion. ASFV isolates vary in virulence from highly pathogenic strains that cause near 100% mortality to low–virulence isolates that can be difficult to diagnose. There is no vaccine or treatment. ASF has not been diagnosed in the U.S. It is present in other parts of the world and therefore poses a risk to the U.S. If ASF is diagnosed in the U.S., the response would include controlled movement restrictions which will affect over-the-road transport of live animals and animal products.