Twenty-one infants who received Type 1 oral vaccine at birth, and six infants from an
unvaccinated control group observed since birth, were fed 105.9 TCD50 of Type 1 oral …

Background High dropout rates in the uptake of oral polio vaccine (OPV) and DTP vaccine
persist despite efforts to improve immunisation coverage. This study identified determinants …

Objectives Although the antipolio drive is undertaken across Pakistan, there are still children
who have not received any oral polio vaccine or are unable to complete recommended …

BACKGROUND: Poliomyelitis is endemic in Northern Nigeria where there is continuous
transmission of wild poliovirus 1 and 3 (WPV1 and 3) and circulating vaccine derived …

After exposure to the oral poliovirus vaccine (OPV), immunocompetent persons excrete
poliovirus (PV) vaccine strains for a limited period. In contrast, immunodeficient individuals …

Inactivated poliovirus vaccine (IPV) may be used in mass vaccination campaigns during the
final stages of polio eradication. It is also likely to be adopted by many countries following …

A study was carried out in a rural community in Kenya to compare the humoral and intestinal
immunity provided by three doses of oral poliovirus vaccine (OPV) and two or three doses of …

Oral vaccines appear less effective in children in the developing world. Proposed biologic
reasons include concurrent enteric infections, malnutrition, breast milk interference, and …

Nigeria has made remarkable progress against polio, but 2 wild polio virus cases were
reported in August 2016; putting an end to 2 y without reported cases. We examined the …

Although rates of seroconversion following administration of trivalent oral poliovirus vaccine
(TOPV) approach 100% in industrialized countries, only 73%(range, 36%–99%) and …