Jan 12, 2011
I have been diagnosed as HIV positive since 8/2009 and have been on Atripla since then. My VL is undetactable and my CD 4 count has gone from 40 to 467 since I started Aripla. A few days ago I had unprotected sex with a guy and ejaculated inside him. In my last email I had misstated that I hadn't told him...we did indeed both know each other's status. I did tell him that I was HIV+ and he told me that he was too. Stupid, I know, but it happened. Do I need to be concerned about reinfection with a new strain of HIV? What should I do? I'm feeling guilty about being so careless. Could I have been reinfected easily with a new strain of HIV from topping him?
Response from Dr. Henry
Superinfection does occur though not common. If both HIV+ partners are on treatment with undetectable blood viral levels then likelihood much decreased. If one of the persons not on treatment then risk of superinfection would be partly related to whether that person's HIV virus is sensitive to the drugs the other partner is on (ie sort of a pre exposure and post exposure prophylaxis situation). There are various possible scenarios but overall risk for super infection is low but worth informing involved HIV docs so they can monitor situation (if nothing else to provide reassurance). KH
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