There hasn't been a reported case of smallpox since 1978.

Smallpox is a deadly disease that used to be very widespread. It would kill 1 in 4 people that were infected. Most of the survivors of smallpox would be blind or scarred. In the 1950s there were 50 million cases of smallpox every year.

The World Health Organization intensified the effort to eradicate smallpox in 1967. The eradication effort worked! The last case of smallpox occurred in a laboratory in the United Kingdom in 1978. Before that, the last natural case of smallpox was in Somalia in 1977..