The World Health Organization (WHO) and the UN's postal agency have released a commemorative postage stamp on 9 May to commemorate which anniversary of the eradication of smallpox?

The World Health Organization (WHO) and the UN's postal agency have re

1.	The World Health Organization (WHO) and the UN's postal agency have released a commemorative postage stamp on 9 May to commemorate which anniversary of the eradication of smallpox?
Answer» The World Health Organization (WHO) and the UN's postal agency have released a commemorative postage stamp on 9 May to commemorate the 40th anniversary of the eradication of smallpox. WHO's smallpox eradication campaign was launched in 1967. In 1980 May, the 33rd World Health Assembly issued its official declaration that the world and all its peoples have won freedom from smallpox.