Hi Doctors, This negligible risk term is used in frottage /genital rubbing naked via HIV sites like aids vancouver /body.com of USA They say as frottage with genital rubbing naked fluids present or not is not risk as oxygen exposure and hiv can not reproduce outside negligible they say as no documented case via this activity till now of hiv Penetrative unprotected is the sexual way only by which hiv transmit they say? What I think by there definition research above said?