In which year did the World Health Organization officially declare that smallpox had been globally eradicated?
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Following a massive, decades-long global immunization campaign, the World Health Organization officially declared smallpox eradicated in 1980. It remains the first and only human infectious disease to be completely wiped out by human intervention. The very last natural case of the more severe form occurred in Bangladesh in 1975, while a milder natural case was recorded in Somalia in 1977. Photo: Photo Credit: Content Providers(s): CDC/James Hicks, Wikimedia Commons, Public domain.
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Source: Wikipedia (CC BY-SA)
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