Study to Evaluate Eupolio(IPV)'s Safety, Long-term Protective Effect and Boosting Effect of One Booster Dose in the Three Primary Vaccination Plus Boosting Schedule, and Protective Effect in the Schedule With Bivalent OPV in Infants

Health Index Multispecialty and Lying-in Clinic, Cavite City

De La Salle Medical and Health Sciences Institue, Gov, D, Nabgybat Ave

University of the Philippines - Philippine General Hospital, Manila

Tropical Disease Foundateion, Inc., Metro Manila

Philippine Heart Center, Quezon City

Faculty of Medicine, Chulalongkorn University, Bangkok

Siriraj hospital, Bangkok

Faculty of Medicine, Chiang Mai University, Chiang Mai

Khon Kaen University, Srinagarind Hospital, Khon Kaen

Hatyai Hospital, Songkhla