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 Prize Nobel Prizes (and the Prizes in Economic Sciences, from 1969 on) were awarded 590 times to 935 people and organizations. With some receiving the Nobel Prize more than once, this makes a total of 27 organizations and 908 individuals. The prize ceremonies take place annually in Stockholm, Sweden (with the exception of the Peace Prize ceremony, which is held in Oslo, Norway). Each recipient (known as a "laureate") receives a gold medal, a diploma, and a sum of money that has been decided by the Nobel Foundation. (, each prize is worth 9,000,000 SEK, or about , €944,000, £836,000 or