After the Civil War, during the 1940s and 1950s, polio attained epidemic proportions, the worst years being 1942 with 741 cases and 1950 with 1,597 cases.
Tras la Guerra Civil, durante las décadas de 1940 y 1950, la polio adquirió carácter epidémico, destacando 1942 con 741 casos y 1950 con 1.597 casos.