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)?

full_context: Document 1: Cedillo v. Secretary of Health and Human Services: Michelle Cedillo v. Secretary of Health and Human Services, also known as the omnibus autism proceeding (OAP), was a court case involving the family of Michelle Cedillo, a girl with autism whose parents sued the United States government because they believed that her autism was caused by her receipt of both the measles-mumps-and-rubella vaccine (also known as the MMR vaccine) and thimerosal-containing vaccines. The omnibus proceeding required the petitioners to present three test cases for each proposed mechanism by which vaccines had, according to them, caused their children's autism; Michelle was the first such case for the MMR-and-thimerosal hypothesis.
Document 2: 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. 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.
Document 3: Arturo Casadevall: Arturo Casadevall is a Bloomberg Distinguished Professor of Molecular Microbiology & Immunology and Infectious Diseases at the Johns Hopkins Bloomberg School of Public Health and Johns Hopkins School of Medicine, and the Alfred and Jill Sommer Professor and Chair of the W. Harry Feinstone Department of Molecular Microbiology and Immunology at the Johns Hopkins Bloomberg School of Public Health. He is an internationally recognized expert in infectious disease research, with a focus on fungal and bacterial pathogenesis and basic immunology of antibody structure-function.
Document 4: Porter W Anderson, Jr.: Porter Warren Anderson, Jr. (born January 1, 1937) is an American microbiologist best known for developing a vaccine that protects children from infections by Haemophilus influenzae type b (Hib), a leading cause of bacterial meningitis and epiglottitis. The techniques he and his colleague Ronald Eby invented were later utilized to develop a vaccine against Streptococcus pneumoniae. He is a member of the National Academy of Sciences of the United States of America.
Document 5: Seth Berkley: Seth Franklin Berkley, M.D. (born 1956 in New York City, New York) is a medical epidemiologist by training. He is the CEO of the GAVI Alliance and a global advocate on the power of vaccines. He is also the founder and former President and CEO of the International AIDS Vaccine Initiative (IAVI). After graduation from McBurney School, New York, in 1974, he received a Bachelor of Science and medical degrees from Brown University, and trained in internal medicine at Harvard University. Berkley has been featured on the cover of Newsweek and recognized by Wired Magazine as among "The Wired 25"—a salute to dreamers, inventors, mavericks and leaders—as well as by TIME magazine as one of the "100 Most Influential People in the World" in 2009. In 2010, "Fortune" magazine named Berkley as one of its "Global Forum Visionaries." Speaking at the TED 2010 conference, Dr. Berkley explains how innovative vaccine design and production technologies are bringing us closer to controlling global health threats like flu and HIV.
Document 6: Lida Holmes Mattman: Graduated with a M.S. in Virology from the University of Kansas and a Ph.D. in Immunology from Yale University. Mattman has taught Immunology, Microbiology, Bacteriology, Virology and Pathology. She worked for 35 years in these fields at various schools and institutions including Harvard University, Howard Hughes Institute, Oakland University and Wayne State University. She was a Professor Emeritus in the Department of Biological Sciences at Wayne State University in Detroit where she was engaged in research and lecturing. She has served as President of the Michigan Branch of the American Society for Microbiology, as Chairman of the Medical Division of the Michigan Academy of Sciences, and held various offices in the local chapter of Sigma Xi.
Document 7: Michael Pichichero: Michael E. Pichichero, MD is Director, Rochester General Hospital Research Institute; Research Professor, Rochester Institute of Technology; and a clinical professor in the Department of Pediatrics at the University of Rochester Medical Center. He is the author of a number of scientific studies regarding the safety of thimerosal as a preservative in vaccines.
Document 8: Mumpsvax: Mumpsvax is a mumps vaccine made of mumps virus. It is a product of Merck & Co., Inc. The vaccine is a component of Merck's three-virus MMR vaccine.
Document 9: MMR vaccine: 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.
Document 10: Merkel cell polyomavirus: Merkel cell polyomavirus (MCV or MCPyV) was first described in January 2008 in Pittsburgh, Pennsylvania. It was the first example of a human viral pathogen discovered using unbiased metagenomic next-generation sequencing with a technique called digital transcriptome subtraction. MCV is one of seven currently known human oncoviruses. It is suspected to cause the majority of cases of Merkel cell carcinoma, a rare but aggressive form of skin cancer. Approximately 80% of Merkel cell carcinoma (MCC) tumors have been found to be infected with MCV. Three years later, a team of researchers at the Dana-Farber Cancer Institute developed an antibody that detected MCV expression in 97% of MCC tumors. MCV appears to be a common—if not universal—infection of older children and adults. It is found in respiratory secretions suggesting that it may be transmitted by a respiratory route. But it also can be found shedding from healthy skin, and in gastrointestinal tract tissues and elsewhere, and so its precise mode of transmission remains unknown. Most MCV viruses found in MCC tumors, however, have at least two mutations that render the virus nontransmissible: 1) The virus is integrated into the host genome in a monoclonal fashion and 2) The viral T antigen has truncation mutations that leave the T antigen unable to initiate DNA replication needed to propagate the virus.
Document 11: MMR vaccine controversy: The MMR vaccine controversy started with the 1998 publication of a fraudulent research paper in "The Lancet" linking the combined measles, mumps, and rubella (MMR) vaccine to colitis and autism spectrum disorders. The claims in the paper were widely reported, leading to a sharp drop in vaccination rates in the UK and Ireland and increases in the incidence of measles and mumps, resulting in deaths and severe and permanent injuries. Following the initial claims in 1998, multiple large epidemiological studies were undertaken. Reviews of the evidence by the Centers for Disease Control and Prevention, the American Academy of Pediatrics, the Institute of Medicine of the US National Academy of Sciences, the UK National Health Service, and the Cochrane Library all found no link between the MMR vaccine and autism.
Document 12: Holly's Law: The Antibody Titer Law ( Holly's Law ) (NJSA 26:2N-8-11), passed on January 14, 2004. The law gives parents a choice before they consent to a second dose of measles, mumps and rubella vaccine. A Vaccine Information Statement (VIS) should be provided to the parents each time a vaccine is given. Holly's Law, NJ Chapter 257. C.26:2N-9b; " Documented laboratory evidence of immunity from MMR shall exempt a child from further vaccination for MMR, as may be required pursuant to Department of Health and Senior Services regulations."
Document 13: R. Palmer Beasley: Robert Palmer Beasley (April 29, 1936 – August 25, 2012) was a physician, public health educator and epidemiologist whose work on hepatitis B involved extensive investigations in Taiwan. That work established that hepatitis B virus (HBV) is a primary cause of liver cancer and that hepatitis B virus is transmitted from mother to infant during childbirth. Beasley and his colleagues also proved that HBV mother-to-infant transmission is preventable by at-birth vaccination. Due to this work, the World Health Assembly designated HBV as the seventh global vaccine in 1992. He later became the author of HBV immunization policies for the World Health Organization.
Document 14: MMRV vaccine: The MMRV vaccine combines the attenuated virus MMR (measles, mumps, rubella) vaccine with the addition of chickenpox vaccine or varicella vaccine (V stands for varicella). The MMRV vaccine is typically given to children between 1 and 2 years of age.
Document 15: Rubella vaccine: Rubella vaccine is a vaccine used to prevent rubella. Effectiveness begins about two weeks after a single dose and around 95% of people become immune. Countries with high rates of immunization no longer see cases of rubella or congenital rubella syndrome. When there is a low level of childhood immunization in a population it is possible for rates of congenital rubella to increase as more women make it to child bearing age without either vaccination or exposure to the disease. Therefore, it is important for more than 80% of people to be vaccinated.
ground_truth: Maurice Hilleman