Cold War tensions and the polio vaccine was the first polio vaccine to receive approval of the U.S. government, and was used until 1961 in America, when the Sabin vaccine was recommended to replace it. Albert Sabin, a virologist who publicly disagreed with Salk and his killed vaccine, worked on creating a vaccine with live, attenuated vaccines. Despite Cold War tensions, in January, 1956 Mikhail Chumakov, the director of Moscow's Polio Research Institute, his wife and colleague Marina Voroshilova, and Anatoli Smorodentsev, traveled to the U.S. in order to study the Salk vaccine and visited the laboratory of Albert Sabin. With the clearance of the FBI, Sabin
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,