La polio, o poliomielitis, es una enfermedad causada por el poliovirus que puede tener consecuencias devastadoras si no se vacuna. La enfermedad ha exisitido durante miles de a帽os, pero se...
Polio is a disease caused by the poliovirus that can have devastating consequences if not vaccinated. While the disease was eliminated from the U.S. in 1994, polio recently reemerged in...
