Swabs were taken for culture from the periurethral area and urethral meatus in 124 uncircumcised and 60 circumcised boys. Proteus mirabilis was grown from 28 (22.6%) swabs from uncircumcised boys and from only one (1.7%) swab from circumcised boys. This supports the idea that the prepuce may be the source of proteus urinary tract infection.
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Ryan et al. (1988) studied this question.
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