oral polio vaccine(1) Vaccin antipoliomyélitique oral(1) Kemo(1) Injectable polio vaccine(1) vaccination coverage(1) Couverture vaccinale(1) PVDVc2(1) Bimbo(1) Nola(1) acute flaccid paralysis(1) Bangui(1) Vaccin polio injectable(1) Berberati(1) Subsaharan Africa(1) IPV(1) Bangassou(1) VPI(1) Mbaiki(1) République centrafricaine(1) vaccination(1) Afrique subsaharienne(1) Paralysie flasque aiguë(1) Bambari(1) Bocaranga(1) Central African Republic(1)