25 years of being polio-free in the Americas
In 1975, before widespread immunization against polio, almost 6,000 children were paralyzed in the Americas due to the disease. In 1991, the last 6 cases of polio were reported, and in 1994, the Region was the first in the world to be certified polio-free. Washington, DC, 21 October 2019 (PAHO)– In August 1991, Luis Fermín Tenorio […]
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