Pakistan began using inactivated poliovirus vaccine alongside oral vaccine in mass campaigns to accelerate eradication of wild-type poliovirus in 2014. Using case-based and environmental surveillance data for January 2014-October 2017, we found that these campaigns reduced wild-type poliovirus detection more than campaigns that used only oral vaccine.
Keywords: Pakistan; disease eradication; inactivated; polio; poliomyelitis; poliovirus; poliovirus vaccine; public health; vaccines; viruses.