The forgotten hero who helped eradicate one of humanity’s oldest killers

William Foege, physician and epidemiologist who helped lead the successful campaign to eradicate smallpox, left, receives the Presidential Medal of Freedom from U.S. President Barack Obama at the White House in Washington, D.C., U.S., on Tuesday, May 29, 2012. Photographer: Andrew Harrer/Bloomberg via Getty Images | Bloomberg via Getty Images

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