Out of three small hospital outbreaks of acute anterior poliomyelitis.
D001699:Biometry; D003141:Communicable Diseases; D006761:Hospitals; D011051:Poliomyelitis / Q000453:epidemiology* / Q000706:statistics & numerical data*
HOSPITALS/contagious disease in; POLIOMYELITIS/epidemiology and statistics
Su tre piccole epidemie ospedaliere di poliomielite anteriore acuta.