Question: When was the American microbiologist who developed MMR vaccine born?
Related documents: [0]  [DOC] 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. Of the 14 vaccines routinely recommended in current vaccine schedules, he developed eight: those for measles, mumps, hepatitis A, hepatitis B, chickenpox, meningitis, pneumonia and "Haemophilus influenzae" bacteria. He also played a role in the discovery of the cold-producing adenoviruses, the hepatitis viruses, and the cancer-causing virus SV40. [END] 
[1]  [DOC] The MMR vaccine (also known as the MPR vaccine after the Latin names of the diseases) is an immunization vaccine against measles, mumps, and rubella (German measles). It is a mixture of live attenuated viruses of the three diseases, administered via injection. It was first developed by Maurice Hilleman while at Merck. [END] 
Answer: 
August 30, 1919
August 30, 1919