Assertion: smallpox's virus | /r/HasProperty | declared eradicated
Facets:
value: in 1980
type: TEMPORAL
value: following a successful vaccination program
type: TEMPORAL
Source sentences:
text: After a final outbreak in the United States in 1949, the virus was declared eradicated in 1980 following a successful vaccination program regarded as one of the greatest triumphs of modern medicine.