Polio epidemic.
Benbow
E P
EP
D004196:Disease Outbreaks / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D009657:North Carolina; D011051:Poliomyelitis / Q000453:epidemiology / Q000266:history*; D012122:Ventilators, Mechanical / Q000266:history*