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Why a person suffering from AIDS cannot fight even very minor infections?

Human immunodeficiency virus (HIV) is a retrovirus which infects human beings causing AIDS. AIDS is a disease in which the immune system of the individual gets affected and immunity is reduced. Lymphocytes present in the blood are destroyed by HIV. This makes the infected individuals more vulnerable to other fatal diseases and infections. Hence, infected person's body is not able to fight even minor infections like cold and minor infections can be fatal in this disease.  

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AIDS means Acute Immuno Deficiency Syndrome. AIDS targets on weakening the lymphocytes and thus the immune system of the body weakens.This results in loss of body resistance even to  very minor infections.

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In case of AIDS, the virus affects the body’s immune system and damage its function. So a person cannot fight even very small infections due to body’s immune system getting weakened.

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because H.I.V virus which causes A.I.D.S attacks the immune system of human body, our immune system becomes weak, thats why even small dieseas like common cold can be really harmful in case of A.I.D.S. A.I.D.S in itself is not harmful, but makes other dieseas harmful.

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