Supplementary polio immunization activities and prior use of routine immunization services in non-polio-endemic sub-Saharan Africa

摘要

Objective To determine participation in polio supplementary immunization activities (SIAs) in sub-Saharan Africa among users and non-users of routine immunization services and among users who were compliant or non-compliant with the routine oral poliovirus vaccine (OPV) immunization schedule. Methods Data were obtained from household-based surveys in non-polio-endemic sub-Saharan African countries. Routine immunization service users were children (aged ?85% in 12 SIAs but non-user participation was >?85% in only 5 SIAs. In 18 SIAs, participation was greater among users ( P