Assertion: vaccine | /r/MadeOf | thimerosal
Facets:
value: before 2001
type: TEMPORAL
Source sentences:
text: Although there is a small increase in risk of injection site redness and swelling with vaccines containing thimerosal, there is no increased risk of serious harm, including autism.
text: NO other vaccines commonly used for children or adults contain thimerosal.
text: Before 2001, some vaccines contained thimerosal, a preservative made with ethyl mercury.