British athletes have been warned against shaking hands with rivals and dignitaries at the London Olympics.
The British Olympic Association (BOA) is concerned about illness damaging the host nation's chances of success.
Asked if handshakes should be avoided, BOA chief medical officer Ian McCurdie said: "I think, within reason, yes.
"The greatest threat to performance is illness and possibly injury. We are talking about minimising risk of illness. It is all about hand hygiene."
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