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Importation countries

Countries which have stopped transmission of indigenous wild poliovirus can be affected by importations of the virus. Depending on the level of immunity in the population and the country's proximity or travel ties to polio-endemic countries, outbreaks can result from these importations. In 2010,  a number of countries continue to be affected by such outbreaks.  Most of these are in the “wild poliovirus importation belt” – a band of countries stretching from west Africa to central Africa and the Horn of Africa.

Fully applying internationally-sanctioned outbreak response strategies can stop most outbreaks quickly. This entails carrying mop-up campaigns with monovalent oral polio vaccine in the infected areas, combined with a series of large-scale supplementary immunization activities and ensuring heightened surveillance for the disease. Until polio is eradicated, importations can occur in any country.