| factors contributing to outbreaks of wild poliovirus type 1 infection involving persons aged ≥15 years in the democratic republic of the congo, 2010-2011, informed by a pre-outbreak poliovirus immunity assessment. | the democratic republic of the congo (drc) experienced atypical outbreaks of wild poliovirus type 1 (wpv1) infection during 2010-2011 in that they affected persons aged ≥15 years in 4 (bandundu, bas congo, kasaï occidental, and kinshasa provinces) of the 6 provinces with outbreaks. | 2014 | 25316879 |