By LAWRENCE K. ALTMAN

A study in Uganda has come up with a surprising finding about sex and H.I.V. Washing the penis minutes after sex increased the risk of acquiring H.I.V. in uncircumcised men.

The sooner the washing, the greater the risk of becoming infected, the study found. Delaying washing for at least 10 minutes after sex significantly lowered the risk of H.I.V. infection, Dr. Fredrick E. Makumbi reported on July 25 at an International AIDS Society Conference in Sydney, Australia.

The researchers do not have a precise explanation for the findings, which challenge common wisdom and the teaching of many infectious disease experts who urge penile cleansing as part of good genital hygiene. Health experts have suggested that washing the penis after sex could prevent potentially infectious vaginal secretions from entering the body through the uncircumcised penis.

(more. . .)

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