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.
Americans for Medical Progress issues the Albert. B. Sabin Hero of Science Award to honor leading medical scientists and advocates of biomedical research. Past recipients have included Dr. Sabin himself, Nobel laureate Joseph E. Murray, vaccine designer Maurice Hilleman, and herceptin developer Dennis Slamon, as well as opera legend Beverly Sills, actress Barbara Barrie, and former U. S. Representatives John E. Porter and Patricia Schroeder for their support and advocacy of medical research. In Spring 2008 the organization awarded Tom Holder, the spokesman for Pro-Test, the Michael D. Hayre fellowship in public outreach. This allowed Holder to move to the United States, and with