Polio vaccine attenuated vaccine strains. In 1958, the National Institutes of Health created a special committee on live polio vaccines. The various vaccines were carefully evaluated for their ability to induce immunity to polio, while retaining a low incidence of neuropathogenicity in monkeys. Large-scale clinical trials performed in the Soviet Union in late 1950s to early 1960s by Mikhail Chumakov and his colleagues demonstrated safety and high efficacy of the vaccine. Based on these results, the Sabin strains were chosen for worldwide distribution. Fifty-seven nucleotide substitutions distinguish the attenuated Sabin 1 strain from its virulent parent (the Mahoney serotype), two nucleotide substitutions
His Name Is Alive and CD through the Silver Mountain Media store. In May 2011, His Name is Alive embarked on a "20th anniversary" series of shows which included a community bike ride in Detroit. Defever says 2011 marks the 20th anniversary of His Name is Alive even though the group's first record was released in 1990. Defever says one undisclosed year has been blacked out of the band's chronology for reasons he will not discuss. His Name Is Alive His Name Is Alive is an American experimental rock band/project from Livonia, Michigan, United States. After several self-released cassettes, they debuted on 4AD Records