HIV-1 and HIV-2 are both types of HIV. While both weaken the immune system, HIV-2 develops more slowly and has a lower transmission rate than HIV-1. HIV-2 is resistant to some medications that can ...
Human immunodeficiency virus (HIV) attacks CD4 “helper” T cells, weakening immunity and raising infection risk. AIDS (stage 3 HIV) occurs when CD4 drops below 200. HIV spreads through blood, semen, ...
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