Poliomyelitis in North America: the disease is not dead yet.
Morrison
E G
EG
Department of Microbiology, Dalhousie University, Halifax.
Embil
J A
JA
D000293:Adolescent; D000328:Adult; D002648:Child; D004196:Disease Outbreaks; D005387:Finland; D006801:Humans; D009656:North America; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D014611:Vaccination