Full text: 1 Index: IMSEAR Main subject: Poliomyelitis / Female / Humans / Male / Poliovirus Vaccine, Oral / Child / Child, Preschool / Communicable Disease Control / Public Health / Incidence Type of study: Etiology_studies / Incidence_studies / Prognostic_studies / Risk_factors_studies Country/Region as subject: Asia Language: En Year: 2007