From the Centers for Disease Control and Prevention. Circulation of a type 2 vaccine-derived poliovirus--Egypt, 1982-1993. [electronic resource] - JAMA Mar 2001 - 1148-9 p. digital Publication Type: Journal Article ISSN: 0098-7484 Subjects--Topical Terms: Disease OutbreaksEgypt--epidemiologyHumansPoliomyelitis--epidemiologyPoliovirus Vaccine, Oral--adverse effectsVaccination