Faden, H Changing poliovirus vaccine policy can be controversial at best. [electronic resource] - Advances in pediatric infectious diseases 1997 - 305-32 p. digital Publication Type: Historical Article; Journal Article; Review ISSN: 0884-9404 Subjects--Topical Terms: History, 19th CenturyHistory, 20th CenturyHumansImmunity, Mucosal--immunologyImmunocompromised HostPoliomyelitis--epidemiologyPoliovirus--chemistryPoliovirus Vaccine, Inactivated--adverse effectsPoliovirus Vaccine, Oral--adverse effectsUnited States--epidemiology