The last outbreak of smallpox was in Somalia in 1977. On May 8, 1980, the World Health Assembly declared the world free of smallpox.
Smallpox was eliminated in 1980. In recent years there have been concerns over the use of the disease in bioterrorism, and measures have been taken to respond to outbreaks. Vaccinations in the 1960’s and ’70’s are considered the reason the disease was eliminated. The two vaccination procedures, mass vaccination and ring vaccination, are being considered in the case of a bioterrorism attack.
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