Assertion: vaccine | /r/AtLocation | the case of diseases
Facets:
value: by exposing people
type: MANNER
Source sentences:
text: In the case of diseases caused by viruses (e.g., measles, polio, and smallpox) and bacteria (e.g., diphtheria, tetanus, and tuberculosis), vaccines work by exposing people to a weakened or inactivated version of the threat.