Continued Endemic Wild Poliovirus Transmission in Security-Compromised Areas — Nigeria, 2016

Progress Toward Poliomyelitis Eradication — Nigeria, January–December 2017

“…This report describes progress in polio eradication activities in Nigeria during January–December 2017 and updates previous reports ( 3 – 5 ). No WPV cases have been reported in Nigeria since September 2016; the latest case had onset of paralysis on August 21, 2016 ( 3 ). However, polio surveillance has not been feasible in insurgent-controlled areas of Borno State.…”

“…The first SIA in January was part of a response to the detection of cVDPV2 isolates in Borno State in March and August 2016 and in Sokoto in October 2016 ( 3 ). Two national-level SIAs were conducted in March and April; approximately 58 million children were vaccinated during each round.…”

“…Nigeria is one of three countries, including Pakistan and Afghanistan, where wild poliovirus (WPV) transmission has never been interrupted. In September 2015, after >1 year without any reported WPV cases, Nigeria was removed from WHO’s list of countries with endemic WPV transmission ( 2 ); however, during August and September 2016, four type 1 WPV (WPV1) cases were reported from Borno State, a state in northeastern Nigeria experiencing a violent insurgency ( 3 ). The Nigerian government, in collaboration with partners, launched a large-scale coordinated response to the outbreak ( 3 ).…”

“…In September 2015, after >1 year without any reported WPV cases, Nigeria was removed from WHO’s list of countries with endemic WPV transmission ( 2 ); however, during August and September 2016, four type 1 WPV (WPV1) cases were reported from Borno State, a state in northeastern Nigeria experiencing a violent insurgency ( 3 ). The Nigerian government, in collaboration with partners, launched a large-scale coordinated response to the outbreak ( 3 ). This report describes progress in polio eradication activities in Nigeria during January–December 2017 and updates previous reports ( 3 – 5 ).…”

“…The Nigerian government, in collaboration with partners, launched a large-scale coordinated response to the outbreak ( 3 ). This report describes progress in polio eradication activities in Nigeria during January–December 2017 and updates previous reports ( 3 – 5 ). No WPV cases have been reported in Nigeria since September 2016; the latest case had onset of paralysis on August 21, 2016 ( 3 ).…”