Aetiology

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Acquired immune deficiency syndrome

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It is now almost universally accepted that AIDS is a consequence of infection with human immunodeficiency virus, HIV (1).

Two different types of viruses are responsible

type 1 (HIV 1) – causes the majority of infections globally

type 2 (HIV 2) – rare outside of west Africa (2)

Centers for Disease Control and Prevention (CDC). 1993 Revised Classification System for HIV Infection and Expanded Surveillance Case Definition for AIDS Among Adolescents and Adults

Grant AD, De Cock KM. ABC of AIDS. HIV infection and AIDS in the developing world. BMJ. 2001;322(7300):1475-8

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Aetiology

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