History of medicine By Luke Raynsford Jul 5, 1928 Sir Alexander Fleming discovers penicillin Oct 18, 1974 First vaccine developed for chicken pox Feb 19, 1978 first test tube baby Aug 13, 1980 smallpox is iradicatid Oct 21, 1996 Dolly the sheep is the first clone Nov 5, 2006 First vaccine to target a cause of cancer
