Why is anal sex more risky than vaginal sex?

The rectal mucosa is more prone to abrasions and tears as compared to the vaginal mucosa. Thus, a discontinuity of the lining mucosa creates a direct portal of entry into the blood stream. Thus, AIDS virus from an infected partner will be transmitted more easily during anal sex.

What precautions should a homosexual take?

If possible, avoid. If not, then while indulging in oral sex, avoid taking the partner’s semen in your mouth. While having anal sex insist on the partner wearing a condom.

Can one tell by inspecting a potential partner if he/she is infected?

No. One cannot definitely say whether an individual harbors the virus by mere inspection, as the vast majority of individuals who have been infected are Symptom less carriers’ and show no evidence whatsoever, of the infection. They may themselves be unaware that they are infected. The best method of finding out whether an individual is infected is to undergo a blood test.