TY  - SER
TI  - Inmunizaciones y disminución de mortalidad por poliomielitis aguda
SN  - 0210-5020
N1  - Este artículo se encuentra disponible en su edición impresa; Bibliografía: p. 30
N2  - Vaccinations are an excellent prophylactic method and, although they are not mandatory, the greater proximity of health centers and the increase in health information have encouraged their dissemination. This work aims to establish the effectiveness of mass vaccination campaigns against polio. Mortality rates from this disease have been compared in two periods: 1952 to 1964 (when the campaigns began) and 1964 to 1978 (the last year that provides reliable data)
ER  -