Max Theiler working on yellow fever. In 1926, they disproved Hideyo Noguchi's hypothesis that yellow fever was caused by the bacterium "Leptospira icteroides." In 1928, the year after the disease was identified conclusively as a virus, they showed that the African and South American viruses are immunologically identical. (This followed Adrian Stokes' inducing yellow fever in rhesus macaques from India). In the course of this research, Theiler contracted yellow fever, but survived and developed immunity. In 1930, Theiler moved to the Rockefeller Foundation in New York, where he later became director of the Virus Laboratory. He was professor of epidemiology and public
Nobel Prize controversies been favored to receive the Prize, but a committee member was later quoted as saying that they would have been "too predictable, too popular." The 1974 prize was denied to Graham Greene, Vladimir Nabokov, and Saul Bellow in favor of a joint award for Swedish authors Eyvind Johnson and Harry Martinson—both Nobel judges and unknown outside their home country. Bellow won in 1976; neither Greene nor Nabokov took home the prize. The 1970 prize was awarded to Soviet dissident Aleksandr Solzhenitsyn, who did not attend the ceremony in Stockholm for fear that the Soviet Union would prevent his return. His