What are the two most common was that HIV transmission occurs?

1. Unprotected sex: This is the most common way that HIV is transmitted. When someone who is infected with HIV has unprotected sex with someone who is not infected, the virus can be passed from one person to the other through the exchange of bodily fluids, such as semen, vaginal fluid, or blood.

2. Sharing needles or other drug paraphernalia: This is another common way that HIV is transmitted. When someone who is infected with HIV shares needles or other drug paraphernalia with someone who is not infected, the virus can be passed from one person to the other through the exchange of blood.