Vaccine-Related Poliomyelitis
Abstract
Abstract Immunization has virtually eliminated wild-type poliovirus in this country, but polio still occurs as an iatrogenic disease from the oral trivalent vaccine.1 The risk is small—about one paralytic case per 3 to 4 million units of live vaccine distributed, or less than 20 cases yearly. History of exposure may be unknown or forgotten, since most cases occur in nonimmune adults who contact the virus from oral secretions or the stool of vaccine recipients. Unwary physicians trained...