During a median follow-up period of 1. No HIV transmissions occurred. The investigators concluded that the risk of HIV transmission through vaginal intercourse in these circumstances was effectively zero Rodger. When HIV is not suppressed by antiretroviral treatment, vaginal intercourse without a condom is a highly efficient route of HIV transmission because high concentrations of HIV can occur in semen and vaginal fluids, and because the genital tissues are very susceptible to infection. This allows the virus to reach the inner vaginal lining, which is rich in immune cells through which it can establish systemic infection.
Chances of getting HIV: Transmission, prevention, support, and more
Awareness of HIV has increased over the last few decades. Many of these strides have been made in the United States. HIV is only transmitted through bodily fluids, such as:. Learn which type of exposure is most likely to transmit the virus and how antiretroviral drugs are making a difference.
We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Human immunodeficiency virus HIV attacks and weakens the immune system, making an individual more vulnerable to serious illness.
This study follows up on an earlier study by the same authors examining per-act heterosexual HIV transmission probabilities. It is a systematic review and analysis of all available study data related to the likelihood of heterosexual HIV transmission. The authors reviewed 43 published studies conducted in various countries that reported per-act heterosexual HIV-1 transmission probability estimates. The authors concluded that the average male to female risk of HIV transmission is.