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Haiti storm: Refugees urged to leave tented camps

In Haiti, hundreds of thousands of survivors of January's earthquake are being urged to leave tented camps and head for shelter as a severe storm closes in.

Tropical Storm Tomas is expected to strike in the next 24 hours, threatening torrential rain, flooding and mudslides.

Haiti's cholera outbreak could also worsen as a result.

Laura Trevelyan reports from Port-au-Prince.

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