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 in Literature 1980 Nobel), Octavio Paz (1982 Neustadt, 1990 Nobel), Tomas Tranströmer (1990 Neustadt, 2011 Nobel) were first awarded the Neustadt International Prize for Literature before being awarded the Nobel Prize in Literature. Another award of note is the Spanish Princess of Asturias Award (formerly Prince of Asturias Award) in Letters. During the first years of its existence it was almost exclusively awarded to writers in the Spanish language, but in more recent times writers in other languages have been awarded as well. Writers who have won both the Asturias Award in Letters and the Nobel Prize in Literature include Camilo José