The idea that smallpox is a very ancient human disease has been called into question. Scientists say the deadly pathogen appears to have been around for hundreds rather than thousands of years. Viral DNA from the mummified remains of a child living during the 17th Century - at the time of an epidemic - casts doubt on historical records. Read more
The global eradication of smallpox was certified, based on intense verification activities in countries, by a commission of eminent scientists on 9 December 1979 Read more
A decision on when to destroy the last known stocks of live smallpox virus has been put off for another three years. The World Health Organization (WHO) agreed to resume the discussion in 2014, following debate this week at its annual meeting. Read more