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Sport increases the risk of transmission of dermatological infections generally. A number of features may predispose to transmission:

There may be direct skin-to-skin contact (as in rugby, wrestling on other contact sports).
Profuse sweating may cause maceration of skin and provide a portal of entry.

Sharing wet areas predisposes to transfer of infection from feet. These include showers and swimming pools. Bare but dry feet, as in judo, other oriental martial arts and gymnastics, are associated with a lower risk of transmission.

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