Assertion: tetanus | /r/CapableOf | become reportable
Facets:
value: in 1947
type: TEMPORAL
value: nationally
type: OTHER
Source sentences:
text: Tetanus became nationally reportable in 1947.
text: The lowest average annual number of cases for a 3-year period in the United States since tetanus became reportable in 1947 was 41 cases per year during 1995--1997 (1).