Polio vaccine incidents reduced public confidence in polio vaccine leading to a drop in vaccination rates. At the same time that Salk was testing his vaccine, both Albert Sabin and Hilary Koprowski continued working on developing a vaccine using live virus. During a meeting in Stockholm to discuss polio vaccines in November 1955, Sabin presented results obtained on a group of 80 volunteers, while Koprowski read a paper detailing the findings of a trial enrolling 150 people. Sabin and Koprowski both eventually succeeded in developing vaccines. Because of the commitment to the Salk vaccine in America, Sabin and Koprowski both did their
Sabin Vaccine Institute Development, the Global Network for Neglected Tropical Diseases, and Vaccine Advocacy and Education. Through its Product Development Partnership (PDP), Sabin has worked with organizations such as King Saud University, Texas Children's Hospital Center, International Vaccine Institute, and George Washington University School of Medicine & Health Sciences toward its goals, with funding and support from the Bill & Melinda Gates Foundation, the National Institute of Allergy and Infectious Diseases, the Dutch Ministry of Foreign Affairs, the Brazilian Ministry of Health and other benefactors. In 2012, Sabin partnered with International Vaccine Institute to combine their research, development, and promotion efforts in Asia,