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The table below lists the risk of transmission per 10,000 exposures for various types of exposures. Estimated Per-Act Probability of Acquiring HIV from an Infected Source, by Exposure Act* * Factors that may increase the risk of HIV transmission include sexually transmitted diseases, acute and late-stage HIV infection, and high viral load.
- Effective HIV Prevention Strategies
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- Factors Increasing HIV Risk
Pilcher CD, Joaki G, Hoffman IF, et al. Amplified...
- PEP
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- HIV Risk and Prevention
HIV treatment has dramatically improved the health, quality...
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- Injection Drug Use
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- Effective HIV Prevention Strategies
This page gives the HIV transmission rates associated with vaginal, anal and oral sex, as well as pregnancy and sharing needles. An undetectable viral load lowers the risk of transmission during sex to zero, whereas a high viral load makes it more likely.
There are differences in the prevalence of HIV and death rates from AIDS between men and women. The chart shows the share of women in populations living with HIV. As we see, HIV prevalence tends to be higher in women across Sub-Saharan Africa, although higher in males across most other regions.
transmission of HIV-1 is the number of copies per mL of plasma HIV-1 RNA (viral load), with a 2·4 times increased risk of sexual transmission for every 1 log
7 lip 2024 · • An estimated 2.3 million [2.2–2.4 million] people were living with HIV in 2023, of which 85% [70–93%] knew their status, 76% [63–83%] were receiving treatment and 73% [69–77%] had suppressed viral loads. An estimated 1.8 million people were receiving antiretroviral therapy in 2023. • An estimated 140 000 [130 000–150 000] people
Key populations remain at much higher risk than the wider population of acquiring HIV today, which is unacceptable 40 years into the HIV pandemic. In sub-Saharan Africa, annual new adult HIV infections declined by 600 000 between 2010 and 2022 (from 1.1 million to 510 000).
strong success in prevention of mother-to-child transmission (PMTCT) but progress has stalled, and large numbers of children continue to be infected with HIV. Prevention efforts among adolescent girls and young women – who remain highly vulnerable in most high-prevalence settings – also have shown improved results, but the rate of this