Ali Maow Maalin (also Mao Moallim and Mao' Mo'allim) (1954 – 22 July 2013) was a Somali hospital cook and health worker from Merca who is the last person known to be infected with naturally occurring Variola minor smallpox in the world. He was diagnosed with the disease in October 1977 and made a full recovery. Although he had many contacts, none of them developed the disease and an aggressive containment campaign was successful in preventing an outbreak.