Most of us are aware of the fact that AIDS is caused by HIV (human immunodeficiency virus) but what we not aware is how this happens.
[Read: HIV and AIDS Symptoms]
When HIV virus enters the body, it starts to destroy CD4 (Cluster of differentiation 4) T cells. CD4 cell is responsible for efficient working of human immune system. Therefore when HIV infects this cell immune system becomes weak and is not able to fight with the diseases in efficient manner. As a result person develops AIDS (acquired immune deficiency syndrome).
In some of the cases people are HIV infected much before the onset of any serious symptom. Over the time level of HIV infection increases in blood, this directly decreases the CD4+ T cells.
HIV is mostly transmitted via semen, blood and vaginal fluids of infected person. This is commonly spread through:
[Read: 10 Facts on HIV and AIDS]
HIV is broadly classified as HIV type 1 and type 2. These groups are constantly growing along with the virus mutation. There is only one best way to completely prevent HIV infection and that is to completely abstain from sex and avoid intravenous drugs. Other effective ways to be safe from HIV include:
Read more articles on HIV and AIDS Causes and Risks
A new report has suggested that the number of HIV positive in the Indian state of Assam is rising at an alarming rate.read more