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 controversies community". Criticism for this award was due to the fact that the Soviet President destabilised the Eastern bloc and caused the economic collapse and fall of the Soviet Union. The 1989 prize went to the 14th Dalai Lama. The committee's selection was opposed by the Chinese government, which opposes the Dalai Lama's activities regarding Tibet. Additionally, the Nobel Prize Committee cited their intention to put pressure on China, due to the Tiananmen Square Massacre which happened in June 1989. The 1978 prize went to Anwar Sadat, the President of Egypt during the 1973 Yom Kippur War against Israel, and Menachem