Nobody successfully claimed the reward, and on May 8, 1980, WHO formally announced that “the World and all its peoples have won freedom from smallpox. ”
وعُرضت مكافأة بقيمة ٠٠٠‏,١ دولار اميركي لمَن يُبلغ عن « حالة جدري » مؤكَّدة اخرى .‏