Assertion: rubella's complication | /r/CreatedBy | disease
Facets:
Source sentences:
text: MMR vaccine is very effective at protecting people against measles, mumps, and rubella, and preventing the complications caused by these diseases.
text: The vaccine is also very good at preventing serious complications caused by these diseases; even if a person gets measles after receiving a vaccination, it’s more likely to be a mild case and less likely to spread to others.