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
Hepatitis B vaccine the vaccine still in use today. In 1976, Blumberg had won the Nobel Prize in Physiology or Medicine for his work on hepatitis B (sharing it with Daniel Carleton Gajdusek for his work on kuru). In 2002, Blumberg published a book, "Hepatitis B: The Hunt for a Killer Virus". In the book, according to Paul A. Offit—Hilleman's biographer and an accomplished vaccinologist himself—Blumberg... ... claimed that the hepatitis B vaccine was his invention. Maurice Hilleman's name is mentioned once... Blumberg failed to mention that it was Hilleman who had figured out how to inactivate hepatitis B virus, how to kill