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Rethinking AIDS strategy after a string of failures. In wake of canceled vaccine study, some experts are reemphasizing proven, low-tech prevention methods.

by Craig Timberg

DURBAN, South Africa — Few cases of AIDS have been as closely scrutinized as that of a former South African prostitute named Beauty. Scientists know when this 40-year-old woman became infected, how her body responded and what happened as her immune system collapsed.

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