Polio
01
شلل الأطفال, المرض الذي يسبب شلل الأطفال
a disabling and life-threatening disease that causes nerve injuries leading to permanent paralysis, happens mostly in children younger than five
أمثلة
Polio outbreaks declined after mass immunization.
انخفضت تفشيات شلل الأطفال بعد التطعيم الجماعي.



























