High-risk sexual behavior is sexual activity vulnerable to HIV infection, and specifically the others fluids enter another person's body, or his bodily fluids to enter someone else's body, the two sides exchange of body fluids is sex, is high-risk sexual behavior. So occurred in high-risk sexual behavior will certainly be infected with HIV? of course not, there is a chance of infection, according to nowhere sexual behavior, and the risk of infection is also different.
First, we divide it, the object can be divided into sex: male male, male and female, female and female are three separate three chance of infection:
1, MSM chance to spread 1/1600 to 1/10, that according to the most optimistic result, the occurrence of 1600 unprotected sex only once infected with HIV, but most alarming is the probability If a healthy man and a male infection occurs ten times unprotected sex, there would be infected with HIV.
2, heterosexual sex is divided into two, male-female and male-female male to female transmission probability is 1 / 200-1 / 2000; female to male transmission probability is 1 / 700-1 / 3000.
3, woman women infected with HIV have not yet reliable data.
Based on the above results, no doubt, MSM easier to spread HIV. Why? We know that when men and men during sex, only through oral sex and anal sex. Anal rectal system, rectal physiological characteristics are thin at unprotected anal sex, the lubricant is very easy to use if you do not cause damage rectal injury, which exists in a certain amount of semen HIV can easily lead to infection. the second is unprotected (ie without using a condom) sexual intercourse, oral sex, mutual masturbation.
In fact, even with a condom, we can not guarantee hundred percent to prevent HIV infection, so do not try to resist the hope of condoms for HIV or other sexually transmitted infections, when the infection promptly taking antiviral drugs to protect their own health, Clean living is the most important and most effective way to prevent HIV infection
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