The probability of HIV infection during sexual intercourse

summary

China's CDC report shows that the proportion of sexually transmitted new HIV infections in China has reached 87%, and is still rising year after year. Nowadays, sexually transmitted infection has become the main way of AIDS transmission and infection. Many people are very afraid after unsafe sexual behavior, and they don't know whether they will be infected or not. So, how many times can they be infected with AIDS after having sex with HIV / AIDS patients? Let's follow the experts to understand the probability of HIV infection during sexual intercourse.

The probability of HIV infection during sexual intercourse

First of all, theoretically speaking, HIV positive women have only 1 / 500-1 / 1000 chances of having unprotected sex with healthy men, that is, 500-1000 times of unprotected sex, healthy men will be infected. The probability of HIV positive men passing through condom free vaginal intercourse to healthy women is 1 / 300-1 / 500, that is, 300-500 times of condom free sexual intercourse, healthy women will be infected by HIV men.

Secondly, but this is only theory. In real life, the infection rate of sexually transmitted diseases among unsafe sex workers is very high. If there are genital ulcers, damage and other conditions, the HIV infection rate of vaginal intercourse without condom will be increased by 20 times! In addition, women's physiological structure is more likely to be infected with AIDS than men. If it is gynecological inflammation, cervical erosion, physiological period, rupture of hymen, sexual violence and so on, women's risk of HIV infection will increase.

Finally, the probability of passive GJ (acceptor) infected with AIDS can reach 1 / 100, and the probability of insertion side infected with AIDS can reach more than 1 / 800. However, there are still many unexpected risks, such as the higher rate of STD infection in gay men, more genital ulcer damage, and few patients who accept anal sex have intact rectal mucosa, which will increase the risk In reality, there are many cases of GJ being infected with AIDS.

matters needing attention

About sexual intercourse, oral sex is one of the ways with low probability of HIV infection, and the party receiving oral sex is twice as likely to be infected as the party carrying out oral sex. The HIV infection rate of the party receiving oral sex is 1 / 10000, and that of the party implementing oral sex is 1 / 5000, that is to say, 5000-10000 times of oral sex will lead to HIV infection.