Vaccine one of the vaccine components is more robust than the others and suppresses the growth and immune response to the other components. This phenomenon was first noted in the trivalent Sabin polio vaccine, where the amount of serotype 2 virus in the vaccine had to be reduced to stop it from interfering with the "take" of the serotype 1 and 3 viruses in the vaccine. This phenomenon has also been found to be a problem with the dengue vaccines currently being researched, where the DEN-3 serotype was found to predominate and suppress the response to DEN-1, −2 and −4 serotypes.
Albert Sabin to Sabin, as well as assuming the middle name Bruce. Sabin received a medical degree from New York University in 1931. He trained in internal medicine, pathology, and surgery at Bellevue Hospital in New York City from 1931–1933. In 1934, he conducted research at The Lister Institute for Preventive Medicine in England, then joined the Rockefeller Institute for Medical Research (now Rockefeller University). During this time, he developed an intense interest in research, especially in the area of infectious diseases. In 1939, he moved to Cincinnati Children's Hospital in Cincinnati, Ohio. During World War II, he was a lieutenant colonel