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Status: imported poliovirus

In January 2006, Niger was taken off the endemic country list, having successfully interrupted indigenous wild poliovirus transmission for a period of 12 months. Since that time, Niger has been subject to repeated polio importations, due to its proximity to northern Nigeria. In all instances, adherence to international outbreak response has prevented imported polioviruses from re-establishing themselves. The dramatic decrease in new cases in northern Nigeria in 2010 has had secondary benefits for Niger, as exposure to imported viruses has decreased. Nevertheless, cases have been reported in 2010. Niger will continue to be at particular risk of re-infection until all indigenous wild poliovirus transmission has been interrupted in Nigeria.


Polio campaign monitoring


Polio this week in West Africa

  • No wild poliovirus type 1 (WPV1) cases have been reported in the past week. The most recent WPV1 case in the region occurred in Tahoua province, Niger, with onset of paralysis on 15 November 2012.
  • Even as polio programme staff across West Africa help to control the Ebola outbreak affecting the region, efforts are being made in those countries not affected by Ebola to vaccinate children against polio to create a buffer zone surrounding the affected countries. The Ebola crisis in western Africa continues to have an impact on the implementation of polio eradication activities in Liberia, Guinea and Sierra Leone. Twenty two surveillance medical officers from the National Polio Surveillance Programme (NPSP) in India have been deployed for 3 months to strengthen surveillance systems and data collection for the Ebola response, demonstrating the polio legacy in action. Read more
  • National Immunization Days (NIDs) are planned in Mali on 8 – 11 May and Subnational Immunization Days (SNIDs) in Niger in May, with dates to be confirmed. In the three Ebola-affected countries of Guinea, Liberia and Sierra Leone, NIDs are planned in May, June and July (depending on the country).