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Circumcision can cut the rate of HIV infection in heterosexual men by 50%, results from two African trials show. The findings are so striking, the US National Institutes of Health decided it would be unethical to continue and stopped the trials early...
Dr Kevin De Cock, director of the HIV/Aids department of the World Health Organization told the BBC the results were a "significant scientific advance" but were not a magic bullet and would never replace existing prevention strategies.
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