摘要：What is already known about this topic? The latest wild poliovirus (WPV) case in Nigeria occurred in August 2016 and was reported in September 2016, in Borno State. What is added by this report? The number of children living in insurgent-held areas in Borno who have not had access to poliovirus vaccines was reduced by 87% during December 2016–May 2017. Trained community members living in insurgent-held areas have reported suspected polio cases with no WPV identified on virologic testing, which suggests that WPV transmission might have been interrupted in Nigeria. However, outbreaks caused by type 2 circulating vaccine-derived poliovirus (cVDPV2) are spreading internationally. What are the implications for public health practice? Improved polio mass campaign quality is required to achieve interruption of all cVDPV2 transmission in Nigeria.
关键词：The number of children living in insurgent;held areas in Borno State; Nigeria; who have not had access to poliovirus vaccines was reduced by 87% during December 2016;May 2017;; Global Health; Children's Health; Polio Vaccination; MMWR; Morbidity & Mortality Weekly Report
