REPORTED incidence of communicable diseases in the United States, first quarter, 1950.
D003141:Communicable Diseases; D004660:Encephalitis; D006801:Humans; D015994:Incidence; D007251:Influenza, Human; D011014:Pneumonia; D011051:Poliomyelitis; D014481:United States
COMMUNICABLE DISEASES; ENCEPHALITIS; INFLUENZA; PNEUMONIA; POLIOMYELITIS