When the blood of a person who was constantly catching infections was tested, it was found to lack in T cells severely. (a) Which disease was he suffering from? (b) Name the virus which causes the disease. (c) State two ways of preventing the spreading of this disease. (d) Name the test used to diagnose this disease.



The person is suffering from AIDS(AQUIRED IMMUNO DEFICIENCY SYNDROME) due to lack in immune cells . the HIV is the virus that causes this disease.it can be prevented by-:
1)Using contaceptive barrier methods such as wearing a condom around a penis or similar covering around a vagina during sexual intercourse as this virus enters through sexual organ and their target is lymphatic nodes or immune system all over the body.
2Use a clean syringe when injecting a person because if bychance the syringe is infected carrying HIV virus and injected in the patients body the microe enters he blood and would start a new infection.
The test used to diagnose this disease is ELISA TEST(enzymed linked immuno sorbent assey).
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Human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS) is a spectrum of conditions caused by infection with the human immunodeficiency virus (HIV). It may also be referred to as HIV disease or HIV infection. Following initial infection, a person may experience a brief period of influenza-like illness. This is typically followed by a prolonged period without symptoms. As the infection progresses, it interferes more and more with the immune system, making the person much more susceptible to common infections, like tuberculosis, as well as opportunistic infections and tumors that do not usually affect people who have working immune systems. The late symptoms of the infection are referred to as AIDS. This stage is often complicated by an infection of the lung known as pneumocystis pneumonia, severe weight loss, skin lesions caused by Kaposi's sarcoma, or other AIDS-defining conditions.
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