It still lives in sections of Central and South America as well as Third world countries who are sending their citizens to the US as illegal immigrants who pay to be smuggled across the US/Mexico border. They are also bringing in other diseases that were thought to be eradicated 20 years ago in the nation.
Who knows, might get it going again from that?
It states the WHO declared it gone...totally....in 1980. Or is that the wrong interpretation?