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UNAIDS is the Joint United Nations Programme on [[HIV]]/AIDS that works towards achieving universal access to [[HIV ]] prevention, treatment, care and support.<ref>{{REFweb

}}</ref> Lewis is a vehement promoter of male circumcision, particularly infant male circumcision (as [[HIV ]] prevention policy).<ref>{{REFweb

}}</ref> Stephen was the leader of the democratic socialist Ontario New Democratic Party for most of the 1970s. In the mid-1980s, he was appointed as Canada's United Nations ambassador. He quit in 1988 and worked at various United Nations agencies during the 1990s. In the 2000s, he served a term as the United Nations' special envoy for [[HIV]]/AIDS in Africa, and head of UNAIDS.<ref name='Ryerson 2010-09-14'>{{REFweb