title: Update: HIV-2 infection--United States.
mesh_terms: D000328:Adult; D000354:Africa, Western / Q000208:ethnology; D003429:Cross Reactions; D006800:Deltaretrovirus Infections / Q000453:epidemiology*; D004641:Emigration and Immigration; D005260:Female; D015498:HIV-2; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D011247:Pregnancy; D014481:United States