Which are the three most effective ways in preventing hiv?

1. Condom use: Consistent and correct use of condoms during sex is one of the most effective ways to prevent HIV transmission. Condoms provide a physical barrier that blocks the exchange of bodily fluids, including semen and vaginal fluids, which can carry HIV.

2. PrEP (Pre-Exposure Prophylaxis): PrEP is a medication taken by HIV-negative people to reduce their risk of acquiring HIV. It is highly effective when taken as prescribed and can be used by individuals who are at high risk of HIV exposure, such as those who have multiple sexual partners, engage in unprotected sex, or use intravenous drugs.

3. PEP (Post-Exposure Prophylaxis): PEP is a medication that can be taken after potential exposure to HIV to prevent infection. It is most effective when started within 72 hours of exposure and must be taken for 28 days. PEP is recommended for individuals who have had unprotected sex with an HIV-positive partner or have shared needles with someone who is HIV-positive.