Tag Archives: Polio

[ad_1] Vaccination against polio developed by Jonas Salk in 1955 and that he arrived in Argentina in 1956 It was the last major vaccination campaign in the country until Tuesday, when it …

[ad_1] Brazilian medical institutions on Thursday alerted the population and health professionals of "the real possibility of the return of poliomyelitis" and the new "emergency" that measles "in the because of low …