Assertion: paralytic polio | /r/CapableOf | change mild
Facets:
value: from an endemic condition
type: OTHER
Source sentences:
text: When people were no longer in contact with the open sewers and privies that had once exposed them to the polio virus in very early infancy when paralysis rarely occurs, the disease changed from an endemic condition so mild that no one knew of its existence to a seemingly new epidemic threat of mysterious origins and terrifyingly unknown scope (p. 23).