Sun October 28, 2012 By:

what are the causes of aids ?explain in250 words .

Expert Reply
Tue October 30, 2012
Human immunodeficiency virus (HIV) causes AIDS. The virus attacks the immune system and leaves the body vulnerable to a variety of life-threatening infections and cancers. Common pathogens like bacteria, yeast, parasites, and viruses that usually do not cause serious disease in people with healthy immune systems can cause fatal illnesses in people with AIDS. Blood, semen, vaginal secretions, and breast milk have been shown to transmit this infection to others.
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