Assertion: vaccine's dose | /r/HasProperty | needed
Facets:
value: often
type: DEGREE
Source sentences:
text: So, more than one dose is needed to build more complete immunity.
text: For some vaccines (primarily live vaccines), studies have shown that more than one dose is needed for everyone to develop the best immune response.
text: An additional dose may be needed if you are at risk because of a mumps outbreak.
text: Sometimes one dose of a vaccine is enough to protect a person, but often more than one dose is needed.
text: Only a single dose is needed.