Yellow fever vaccine Foundation to improve the vaccine from the "Asibi" strain, discovered that a favorable chance mutation in the attenuated virus had produced a highly efficacious strain that was named 17D. After field trials in Brazil, over one million people were vaccinated by 1939, without severe complications. For his work on the yellow fever vaccine, Theiler received the 1951 Nobel Prize in Physiology or Medicine. Only the 17D vaccine remains in use today. The outbreak of yellow fever in Angola in January 2016 has raised concerns about whether the global supply of vaccine is adequate to meet the need during a large
Franklin A. Neva Franklin A. Neva Franklin Allen Neva (June 8, 1922, Cloquet, Minnesota – October 16, 2011, Billings, Montana) was a virologist and physician who discovered Boston exanthem disease, helped isolate rubella virus, and worked with Jonas Salk on the development of the polio vaccine. He was the first member of the American Society of Tropical Medicine and Hygiene to receive the Ben Kean Medal, in 1995, and also won the Donald Mackay Medal. Neva received his MD from University of Minnesota Medical School in 1946, as part of a Navy training program. He completed his medical residency at Boston City Hospital,