Which virus is specifically linked to AIDS?

The virus specifically linked to AIDS (Acquired Immunodeficiency Syndrome) is the Human Immunodeficiency Virus. HIV attacks the body's immune system, particularly the CD4 cells (T cells), which are crucial for maintaining the immune defense against infections. As the virus progresses, it can lead to a significant decrease in T cell counts, resulting in the immune system being unable to fight off opportunistic infections and diseases, which is the hallmark of AIDS.

HIV is classified into two main types: HIV-1, which is the most common worldwide, and HIV-2, which is predominantly found in West Africa. The relationship between HIV and AIDS is fundamental; without HIV infection, an individual cannot develop AIDS. Understanding this connection is critical for both prevention and treatment strategies in public health.

Other viruses listed, such as the Hepatitis B virus, Influenza virus, and Herpes simplex virus, are significant in their own contexts but do not have a direct link to the development of AIDS. Hepatitis B can cause liver disease, and while it is a serious health concern, it does not lead to the immunodeficiency characterized by AIDS. Influenza causes seasonal respiratory infections, and Herpes simplex is primarily associated with oral and genital lesions, neither of which