Assertion: vaccine's virus | /r/HasProperty | modified
Facets:
value: sometimes
type: DEGREE
Source sentences:
text: Sometimes the harmless virus has been modified so that it cannot replicate inside the body.
text: Imvanex contains a modified form of the vaccinia virus, Modified vaccinia Ankara, which does not replicate in human cells and hence does not cause the serious side effects that are seen with replicating smallpox vaccines.