Enzootic bovine leukosis–-a slow virus disease

Abstract

In many countries, enzootic bovine leukosis is of minor economic importance compared with diseases such as brucellosis and Rift Valley fever, and this has tended to limit interest in its cause and prevention. In central and eastern Europe, however–-and in certain herds in the USA and Colombia–-the incidence and fatality rate is high enough to cause great concern.