Maurice Hilleman

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Maurice Ralph Hilleman, (August 30, 1919 – April 11, 2005), was an American microbiologist who specialized in vaccinology and developed more than three dozen vaccines, more than any other scientist. Of the fourteen vaccines routinely recommended, 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.

According to Dr. Adel F. Mahmoud, president of Merck Vaccines, Dr. Hilleman's work has saved millions of lives, and protected millions more from disease. It has been estimated that his work has saved more individual lives than that of any other scientist.

Dr. Hilleman was born on a farm near the high plains town of Miles City, Montana. His mother and twin sister died when he was born. He credits much of his success to his work with chickens as a boy. Chicken eggs are used to develop vaccines based on weakened viruses.

When he was in the eighth grade, he discovered Charles Darwin, and was caught reading The Origin of Species in church. Due to lack of money, he almost failed to attend college. His eldest brother interceded, and Hilleman graduated from Montana State University on a scholarship. He won a fellowship to the University of Chicago and received his doctoral degree in microbiology in 1941.

After joining E.R. Squibb & Sons (now Bristol-Myers Squibb), he developed a vaccine against Japanese B encephalitis, a disease that threatened American troops in the Pacific Theater during World War II. As chief of the Department of Respiratory Diseases, Walter Reed Army Institute of Research from 1948 to 1951, he discovered the genetic changes that occur when the influenza virus mutates, known as shift and drift. That helped him to recognize that an outbreak of flu in Hong Kong could become a huge pandemic. Working on a hunch, he and a colleague found (after nine 14-hour days) that it was a new strain of flu that could kill millions. Forty million doses of vaccines were prepared and distributed. Although 69,000 Americans died, the pandemic could have resulted in many more U.S. deaths.

In 1957 Dr. Hilleman joined Merck & Co. as head of its new virus and cell biology research department at Whitehouse Station, New Jersey. It was while with Merck that Hilleman developed most of the 40 experimental and licensed animal and human vaccines he is credited with, working both at the laboratory bench as well as providing scientific leadership. He retired from Merck in 1984 as senior vice president of the Merck Research Labs in West Point, Pennsylvania.

In 1963 his daughter Jeryl Lynn came down with the mumps. He cultivated material from her, and used it as the basis of a mumps vaccine. The Jeryl-Lynn strain of the mumps vaccine is still used today.

Dr. Hilleman served on numerous national and international advisory boards and committees, academic, governmental and private, including the National Institutes of Health's Office of AIDS Research Program Evaluation and the National Vaccine Advisory Committee of the National Vaccine Program. In his later life, Hilleman was an adviser to the World Health Organization.

He was an elected member of the U.S. National Academy of Science, the Institute of Medicine, the American Academy of Arts and Sciences, and the American Philosophical Society. In 1988 President Ronald Reagan presented him with the National Medal of Science, the nation's highest scientific honor. He received the Prince Mahidol Award from the King of Thailand for the advancement of public health, as well as a special lifetime achievement award from the World Health Organization, the Albert Lasker Award for Clinical Medical Research and the Sabin Gold Medal and Lifetime Achievement Awards.

In March of 2005 the University of Pennsylvania School of Medicine's Department of Pediatrics and The Children's Hospital of Philadelphia, in collaboration with The Merck Company Foundation, announced the creation of The Maurice R. Hilleman Chair in Vaccinology.

At the time of his death on April 11, 2005, at the age of 85, Dr. Hilleman was Adjunct Professor of Pediatrics at the School of Medicine, University of Pennsylvania, in Philadelphia.

Robert Gallo, co-discover of the virus that causes AIDS once said “If I had to name one person who has done more for the benefit of human health with less recognition than anyone else, it would be Maurice Hilleman. Maurice should be recognized as the most successful scientist in history.” ^[1]