HIV & AIDS... 
HIV & AIDS... What is HIV & AIDS?
HIV stands for human immunodeficiency virus that causes AIDS. This virus takes hold on the human immune system cells (CD4) and reproduces itself. It damages human immune system and weakens it slowly until an infected person succumbs to the AIDS.
AIDS stands for Acquired Immune Deficiency Syndrome and it is the state that is identified when there are a set of related symptoms that are caused by advanced HIV infection. AIDS makes the body susceptible to life threatening sickness. It is called as opportunistic infections (TB, PCP. HSV) AIDS is the advanced stage of HIV infection. When a person develops this stage he/she cannot go back to the primary stage that is known as HIV infection though he/she seems better. How Does HIV damage the Body?
The immune system is composed of specialized cells that are known to be T4 or CD4, or helper T. These cells fights off with invading germs and keeps the body healthy. HIV attacks on these cells and weakens them. However it can also assault nervous system, cells of brain, lymphatic system, digestive system, and other parts of the body. These CD4 cells orders the cells that are known to be soldier cells to destroy the invaders like bacteria, fungi, parasites, cancers, and viruses that can spread the infection in body. HIV virus replicates itself and virtually damages immune system.
