Question | Discussion | References | CME Credit  Case 1: High-
Risk Behavior Among HIV-infected Individuals  You answered:  C
His practice of having casual sex only with partners whom he
assumes are HIV-infected reduces his likelihood of acquiring a
sexually transmitted disease (STD).  This answer is incorrect.
Selecting sex partners who are HIV-infected (serosorting) does
not protect this patient against STDs. Indeed, unprotected
intercourse with casual or anonymous partners greatly increases
his risk of acquiring a STD.  A It is unusual that this
individual has remained sexually active despite having HIV
infection, since fewer than 20% of HIV-infected men remain
sexually active once they have a diagnosis of HIV. B Although
many HIV-infected men, such as this patient, are sexually
active, fewer than 5% of them engage in unprotected anal
intercourse. D Medications used to treat erectile dysfunction
have been associated with increased unsafe sexual practices in
HIV-infected men who have sex with men (MSM).  [Ba