polio immunity / polio / low quality polio immunization campaigns / whole-cell and acellular pertussis / polio vaccination schedule / polio eradication field work / /
MedicalTreatment
immunization / vaccination / /
Organization
Melinda Gates Foundation / the Netherlands Vaccine Institute / World Health Organization / World Bank / Advisory Committee on Polio Eradication / United Nations / World Health Assembly / United Nations Children’s Fund / GAVI / Netherlands Vaccine Institute / Statens Serum Institute / /