AIDS, known as Acquired Immune Deficiency Syndrome (AIDS), is a serious infectious disease with a high mortality rate that occurs when the human immunodeficiency virus invades the human body.
Because HIV infection replicates in large numbers in the human body, it selectively destroys CD4+ T lymphocytes, causing a decrease in the number of peripheral blood leukocytes and the total number of lymphocytes; the absolute number of T helper lymphocytes (CD4+) decreases and the relative number of cytotoxic T lymphocytes (CD8+) increases. viremia and acute damage to the immune system, so AIDS can present with a low lymphocyte count and symptoms of upper respiratory tract infection such as fever, malaise, sore throat, and general malaise. However, the lymphocyte ratio is the percentage of lymphocytes in the total white blood cell count and may be high or low. Therefore, there is no absolute relationship between lymphocyte ratio and AIDS, and one cannot rely on lymphocyte ratio to diagnose AIDS. For people who are at high risk of AIDS, they should undergo AIDS-related tests to confirm the diagnosis as soon as possible.