The Human Immunodeficiency Virus
Words: 1663 Pages: 6 5181The Human Immunodeficiency Virus (HIV) attacks the CD4 cells of the body's immune system and weakens the defense mechanism from protecting against infections and diseases. As the number of CD4 cells decreases the body becomes more vulnerable to all opportunistic diseases and cancers. AIDS is the most advanced stage of HIV infection with severe immune deficiency i.e. least CD4 count (less than 200 cells/ cubic meter), it takes nearly 2 15 years for the virus to develop into this stage. […]