To transmit HIV, biter must have blood in the mouth.
D000368:Aged; D001734:Bites, Human / Q000821:virology*; D001769:Blood / Q000821:virology; D005260:Female; D015658:HIV Infections / Q000635:transmission*; D006801:Humans; D008297:Male; D012463:Saliva / Q000821:virology