Nigeria

Status: Affected by circulating vaccine-derived poliovirus type 2.

Nigeria is affected by circulating vaccine-derived poliovirus type 2 (cVDPV2) outbreaks. No wild poliovirus type 2 has been detected in the country since 2016.

The Global Polio Eradication Initiative is focused on strengthening surveillance to find and respond to the virus, wherever it emerges, and closing immunity gaps to protect the population and stop the virus from circulating. The programme is also committed to advocating for sustained political commitment and ensuring necessary financial resources and technical support for polio eradication at all levels.

Polio this week in Nigeria

  • One case of circulating vaccine-derived poliovirus type 2 has been reported in the past week from Konduga district, Borno State, with onset of paralysis reported on 20 June 2019. There are 13 cVDPV2 cases reported in 2019. There were 34 cVDPV2 cases in 2018.
  • One positive environmental samples were reported in the past week from Ilorin East, Kwara East. The sample was collected on 27 June 2019.

International Health Regulations

Nigeria is classified by the International Health Regulations (IHR) as a state infected with WPV1, cVDPV1 or cVDPV3 with potential risk of international spread, and as a state infected with cVDPV2 with potential risk of international spread.  It is therefore subject to temporary recommendations as of September 2019.

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Key at-risk: no longer poliovirus-infected, but at high risk of outbreaks
Outbreak: has stopped indigenous WPV circulation but affected by outbreak of imported WPV or circulating vaccine-derived poliovirus
Endemic: has never stopped indigenous wild poliovirus (WPV) circulation

Travel advice

WHO’s International Travel and Health recommends that all travellers to polio-affected areas be fully vaccinated against polio. Residents (and visitors for more than 4 weeks) from infected areas should receive an additional dose of OPV or inactivated polio vaccine (IPV) within 4 weeks to 12 months of travel.

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