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Drug resistance and infection

Mar 15, 2008

Shortly after starting having sex with my current partner, I tested positive for HIV. He said he had recently tested negative, but still we had some unprotected sex. Recently, he tested positive too, so we just assumed I infected him. But my resistance tests showed that my virus was resistant to a couple medications, while his came back showing no resistance whatsoever. How is this possible? I was expecting that the resistance testes would be identical for both of us.

Response from Dr. Young

Thanks for your post.

I'd believe the resistance tests-- if they show different viruses, you probably have different sources. The fact that you tested positive "shortly after" having sex with your partner may be the clue: it generally takes a few months to turn positive after a timed exposure to HIV.


Taking only 2 of 3 RX HIV Meds

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