Max Theiler health at the Yale School of Medicine and the School of Public Health from 1964 to 1967. After passing the yellow fever virus through laboratory mice, Theiler found that the weakened virus conferred immunity on rhesus macaques. The stage was set for Theiler to develop a vaccine against the disease. Theiler first devised a test for the efficacy of experimental vaccines. In his test, sera from vaccinated human subjects were injected into mice to see if they protected the mice against yellow fever virus. This "mouse protection test" was used with variations as a measure of immunity until after World
2006 Nobel Peace Prize that Yunus was a poor choice for the award, stating: "...the Nobel committee could have made a braver, more difficult, choice by declaring that there would be no recipient at all." He is one of only seven persons to have won the Nobel Peace Prize, Presidential Medal of Freedom, and the Congressional Gold Medal. Other notable awards include the Ramon Magsaysay Award in 1984, the World Food Prize, the International Simon Bolivar Prize (1996), the Prince of Asturias Award for Concord and the Sydney Peace Prize in 1998, and the Seoul Peace Prize in 2006. Additionally, Yunus has been awarded