What is HIV and how it progresses to AIDS?

HIV is a virus that causes damage to the immune system by destroying the white blood cells in the body. First identified in the year 1981, Human Immunodeficiency Virus (HIV) interferes with the body’s ability to fight against disease-causing microorganisms. It destroys CD4 cells (a type of T-helper cells that move around the body & detect anomalies & infections), makes copies of itself and weakens an individual’s immune system.
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