Did African Swine Fever really not come to the USA in 1981?
African Swine Fever: A 1981 Overview
" Given the speed and ease of travel in today's world, the probability that ASF will be introduced into the US is very high. We cannot talk in terms of "if" ASF arrives, but "when" it arrives, and we must be ready when it does."
African Swine Fever: An Overview (iastate.edu)
How did the USA escape a major ASF epidemic back in the 80s? Did it really?