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Published online 12 October 2007 | Nature | doi:10.1038/news.2007.163

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Health officials fear Nigeria polio setback

Outbreak linked to vaccine may hit immunization rates.

World Health Organization (WHO) officials have stressed the need for Nigeria to continue its polio vaccination programme, despite an outbreak that has been linked directly to the live virus strain contained within the vaccine used in that country.

The outbreak has reportedly paralysed 69 children in the north of the country.

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