Transmission (transmission) of HIV is sexually occurs when there is contact between the secretion of vaginal fluids or fluids preseminal someone with rectum, genitals, or mucous membranes of the mouth of her partner. Receptive unprotected sexual intercourse is more risky than unprotected insertive intercourse, anal intercourse and the risk is greater than usual risk sex and oral sex.
Oral sex does not mean no risk because HIV can enter through both insertive and receptive oral sex. Sexual violence in general increased the risk of HIV transmission is not generally used as a protective and often physical trauma to the vaginal cavity which facilitates the transmission of HIV.
Oral sex does not mean no risk because HIV can enter through both insertive and receptive oral sex. Sexual violence in general increased the risk of HIV transmission is not generally used as a protective and often physical trauma to the vaginal cavity which facilitates the transmission of HIV.
Sexually transmitted diseases increase the risk of HIV transmission because it can cause the disruption of normal epithelial tissue as a result of genital ulcers, and also because of the accumulation of HIV-infected cells (lymphocytes and makrofaga) in semen and vaginal secretions.
Epidemiological studies from Sub-Saharan Africa, Europe and North America showed that there were approximately four times greater risk of becoming infected with HIV as a result of genital ulcers such as those caused by syphilis and / or chancroid.
Risk is also increased significantly, although much smaller, by the presence of sexually transmitted diseases like gonorrhea, chlamydia infection and trichomoniasis which cause local accumulations of lymphocytes and makrofaga.
Transmission of HIV depends on the infectiousness of people with and susceptibility of the uninfected partner. Infectivity seems to vary at different stages of the disease and not constant between individuals. Plasma viral load that can not be detected does not necessarily mean that low viral load in semen or genital secretions.
Every 10 times increase in the number of blood plasma HIV RNA is proportional to the 81% increase in the rate of HIV transmission. Women are more susceptible to HIV-1 infection due to hormonal changes, vaginal microbial ecology and physiology, and greater vulnerability to sexual diseases . People who are infected with HIV can still be infected with other virus types are more deadly.
