title: A second WHO region declared polio-free.
authors.forename: J
authors.initials: J
authors.lastname: Maurice
mesh_terms: D002160:Cambodia / Q000453:epidemiology; D002681:China / Q000453:epidemiology; D005202:Asia, Eastern / Q000453:epidemiology; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control*; D014944:World Health Organization