How does hiv first infect the body on a molecular level?

HIV infection: blood: Hi the most common infection with HIV is exposure to the blood of the virus or the genetic parts of the virus that are carried in the white blood cells of the infected person. An uninfected person's immune system sees something foreign and tries to destroy or engulf it to destroy it. The engulfing of the virus or the infected cell leads to a new infection of the host's cells.