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
Nobel Prize controversies the award despite his death, under the rule that allows awardees to receive the award who die between being named and the awards ceremony. The decision to award the 2010 Nobel Prize for Physiology or Medicine to Robert Edwards for developing the technique of in vitro fertilisation was bitterly denounced by the Catholic Church, which objects to all artificial methods of human conception and fertilization as well as to contraception. One Vatican official called the award "out of order", and the International Federation of Catholic Medical Associations issued a statement saying that the use of human embryos, created and discarded