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
Nobel Peace Prize the prize, profoundly influenced his decision to include peace as a category. Some Nobel scholars suggest it was Nobel's way to compensate for developing destructive forces. His inventions included dynamite and ballistite, both of which were used violently during his lifetime. Ballistite was used in war and the Irish Republican Brotherhood, an Irish nationalist organization, carried out dynamite attacks in the 1880s. Nobel was also instrumental in turning Bofors from an iron and steel producer into an armaments company. It is unclear why Nobel wished the Peace Prize to be administered in Norway, which was ruled in union with Sweden