Gurung, Santosh, Harris, Jennifer B, Eltayeb, Abu Obeida, Hampton, Lee M, Diorditsa, Sergey, Avagyan, Tigran and Schluter, W William (2017) Experience with inactivated polio vaccine introduction and the ?witch?from trivalent to bivalent oral polio vaccine in the World Health Organization? Western Pacific region. The Journal of Infectious Diseases, 216 (suppl_).