According to the CDC According to the CDC totaled 3 cases viruela. CDC, US: Monkeypox According to the CDC Monkeypox Information http://www.cdc.gov/poxvirus/monkeypox/about.html sporadic cases in the Republic of Congo (formerly Zaire) According to the CDC US CDC data According to the CDC U.S Centre for Disease Control According to the CDC About Monkeypox