Smallpox eradication in 1975.
D000349:Africa; D001208:Asia; D015023:Democratic Republic of the Congo; D005002:Ethiopia; D006801:Humans; D008993:Monkeypox virus; D011213:Poxviridae Infections / Q000453:epidemiology; D012899:Smallpox / Q000517:prevention & control*; D014944:World Health Organization