Question: Who was this American microbiologist who specialized in vaccinology that contributed to the development of the immunization vaccine against measles, mumps, and rubella (MMR vaccine)?
Sentence (from "Maurice Hilleman"): Maurice Ralph Hilleman (August 30, 1919 – April 11, 2005) was an American microbiologist who specialized in vaccinology and developed over 40 vaccines, an unparalleled record of productivity.
Relevant evidence: Yes