This is the online Famous Jews Quiz.
4. Baruch Samuel Blumberg (born July 28, 1925) is an American doctor and co-recipient of the 1976 Nobel Prize in Medicine (with Daniel Carleton Gajdusek), and the current President of the American Philosophical Society.
He received the Nobel Prize for "discoveries concerning new mechanisms for the origin and dissemination of infectious diseases." Blumberg identified the Hepatitis B virus, and later developed the its diagnostic test and vaccine.[wiki]