Assertion: serotype dengue | /r/HasProperty | introduced into susceptible population
Facets:
value: in 1977
type: TEMPORAL
value: previously
type: TEMPORAL
value: in cuba
type: LOCATION
value: largely
type: DEGREE
Source sentences:
text: Previously, serotype 1 dengue (DENV-1) was introduced into a largely susceptible population in Cuba in 1977.