Acquired Immune Deficiency Syndrome (AIDS) is caused by the human immunodeficiency virus (HIV). The HIV infection will gradually destroy the body's immune system.
A HIV-infected person may experience the following symptoms:
HIV is spread through sexual contact including oral, vaginal, and anal sex; via blood through transfusions or needle sharing; and from a pregnant woman to the foetus she is carrying or a nursing mother to her baby.
The infection is NOT spread by casual contact such as hugging and touching, by inanimate objects such as dishes or toilet seats, or by mosquitoes.
Always practise safe sex by using condom (although this does not give 100% protection from HIV) and have one sexual partner.