Staff at London's East End hospitals are working round the clock, to deal with the extra visitors from abroad.
The Royal London hospital has planned for an increase in patient numbers over the games.
Our Health Correspondent Liz Wickham has more.
More top news
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Police are offering a reward of £20,000 for anyone who comes forward with video footage of a fatal stabbing in Peckham earlier this year.
Rahad Hussain, 23, has been charged over an acid attack in east London which left two people with "life-changing" injuries.