Estimates regarding the prevalence of AIDS in southern Africa indicate that

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Estimates indicate that about two-thirds of the worldwide cases of HIV-positive adults are in southern Africa. However, there is no reliable estimate for the exact percentage of the adult population in southern Africa that is HIV positive. As for option B, it is too low; estimates indicate that in some southern African countries, more than 20% of the adult population is HIV positive. Option C is correct; an estimated 5 million children in southern Africa have lost one or both parents to AIDS.

Estimates Regarding the Prevalence of AIDS in Southern Africa Indicate