HIV prevention involves strategies to reduce the risk of acquiring the HIV virus. Key methods include using condoms during sexual activity, which can significantly lower the chance of transmission. Regular testing and knowing your partner's HIV status are also important steps in prevention. Another effective approach is the use of Pre-Exposure Prophylaxis (PrEP), a medication taken by people at high risk of HIV to prevent infection. Additionally, ensuring that individuals living with HIV are on effective treatment can reduce the viral load to undetectable levels, making transmission highly unlikely.