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UN campaign to prevent 'global resurgence' of polio

19 December 2013 Last updated at 09:39 GMT

The UN is warning that a significant outbreak of polio in the Horn of Africa could lead to a global resurgence if it is not stopped.

An emergency vaccination campaign is underway to prevent further cases of the disease, which can cause paralysis and sometimes death.

Rajesh Mirchandani reports.