EFFECTIVENESS OF VACCINATION AT THE OUTSET OF THE 1962 INFLUENZA EPIDEMIC.
D001699:Biometry; D058872:Epidemics; D004813:Epidemiology; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human; D009787:Occupational Medicine; D013223:Statistics as Topic; D014586:USSR; D014611:Vaccination
D007252:Influenza Vaccines
EPIDEMIOLOGY; INDUSTRIAL MEDICINE; INFLUENZA; INFLUENZA VACCINE; STATISTICS; USSR