What does HIV do to the body's white blood cell?

HIV primarily targets and infects CD4 T cells, a type of white blood cell crucial for the immune system's function. By integrating its genetic material into these cells, HIV disrupts their ability to coordinate an immune response, ultimately leading to a decline in their numbers. As the virus progresses, this depletion weakens the immune system, making the body more susceptible to infections and diseases. If untreated, this can result in the progression to AIDS, where the immune system is severely compromised.