MAY 27: In this Centers for Disease Control and Prevention handout graphic, symptoms of one of the first known cases of the monkeypox virus are shown on a patient?s hand May 27, 2003. The CDC said the viral disease monkeypox, thought to be spread by prairie dogs, has been detected in the Americas for the first time with about 20 cases reported in Wisconsin, Illinois, and Indiana. (Photo Courtesy of CDC/Getty Images)