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At which stage of HIV infection does one usually show symptoms of AIDS?

1. Within 15 days of sexual contact with an infected person.
2. When the infected retro virus enters host cells.
3. When HIV damages large number of helper T-Lymphocytes.
4. When the viral DNA is produced by reverse transcriptase.

Correct answer: When HIV damages large number of helper T-Lymphocytes.

Solution

AIDS develops when HIV has destroyed a large number of CD4 helper T-lymphocytes, weakening the immune system enough for opportunistic infections and symptoms to appear. The earlier stages listed are infection or replication events, not the stage of clinical AIDS.

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