Dating an hiv person

HIV-negative people can take a daily Truvada pill as pre-exposure prophylaxis, or Pr EP, to lower their risk by 92 percent; similarly, there is post-exposure prophylaxis, or PEP.

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The risk of contracting HIV during vaginal penetration, for a woman in the United States, is 1 per 1,250 exposures (or 0.08 percent); for the man in that scenario, it’s 1 per 2,500 exposures (0.04 percent, which is the same as performing fellatio).

As for anal sex, the most risky sex act in terms of HIV transmission, if an HIV-negative top—the insertive partner—and an HIV-positive bottom have unprotected sex, the chances of the top contracting the virus from a single encounter are 1 in 909 (or 0.11 percent) if he’s circumcised and 1 in 161 (or 0.62 percent) if he’s uncircumcised.

A report by the Black AIDS Institute states that African-American same-gender-loving men have a 25 percent chance (which is one in four odds) of contracting HIV by the time they’re 25 years old—and a 60 percent chance by the time they’re 40.

Other researchers have predicted that half of all gay men in America who are 22 years old today will be HIV positive by the time they’re 50.

Yet not even the Nate Silvers of the world would be wise to gauge HIV risk based on statistics. Numbers and probabilities can be miscalculated and misinterpreted.

Case in point: Having a 1 in 70 chance of transmitting HIV does not mean it takes 70 exposures to the virus in order to seroconvert.It’s also important to realize that during acute infection, the immune system has not yet created the antibodies that lower viral load, at least for a few years.HIV tests that rely on antibodies may give a false negative reading during an acute infection, also known as the “window period.” The presence of another sexually transmitted infection (STI)—even one without symptoms, such as gonorrhea in the throat or rectum—can raise HIV risk as much as 8 times, in part because STIs increase inflammation and thus the number of white blood cells that HIV targets.A Centers for Disease Control and Prevention (CDC) fact sheet describes the probability of oral sex transmission as “low.” But what does that mean?The website puts it this way: “You can get HIV by performing oral sex on your male partner, although the risk is not as great as it is with unprotected anal or vaginal sex.” Regarding going down on a woman, the site explains: “HIV has been found in vaginal secretions, so there is a risk of contracting HIV from this activity.” Does this put your mind at ease? That’s why many of us seek out percentages and ratios when we talk about risk. But do they give us a better understanding of HIV risk and sexual health? Probabilities of HIV transmission per exposure to the virus are usually expressed in percentages or as odds (see chart at the end of this article).At this time, viral load skyrockets, increasing a person’s infectiousness by as much as 26 times (the same thing as saying “26-fold”).

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