Two-year follow-up on one quarter of 1944 epidemic of poliomyelitis in Kentucky.
D001699:Biometry; D058872:Epidemics; D005500:Follow-Up Studies; D007629:Kentucky; D011051:Poliomyelitis / Q000453:epidemiology* / Q000706:statistics & numerical data*
POLIOMYELITIS/epidemiology and statistics