Assertion: smallpox | /r/HasAspect | a high case-fatality rate
Facets:
value: always
type: TEMPORAL
Source sentences:
text: Clinical descriptions of the disease indicate that smallpox always had a high case-fatality rate until around the end of the 19th century, when a more benign form of the disease (with a similar rash but substantially lower mortality rate) emerged in the Western Hemisphere.