Verywell Health, January 26, 2023.
Smallpox is a deadly infectious disease caused by a virus. It hasn’t caused an infection in the wild since the 1970s. No one has had smallpox in the United States since 1949. The last death from smallpox was in the United Kingdom in 1978.
Though you’re not likely to encounter smallpox in the wild, it still exists in two labs. These two labs are the Centers for Disease Control and Prevention (CDC) in the United States and the Vector Institute in Russia. These samples are kept to test drugs and conduct other experiments. Read More >