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
Requiem for What's His Name Passengers and multi-reed player Ralph Carney from Tom Waits' touring band. Though less swinging and fresh than 1990's "Rootless Cosmopolitans", this album's original compositions and renditions of Duke Ellington and Howlin' Wolf tunes still leave plenty of room for Ribot's discordant guitar stylings. Available in the U.S. only as an expensive import. ". All compositions are by Marc Ribot, except where indicated otherwise. Requiem for What's His Name Requiem for What's His Name is the second album by Marc Ribot & The Rootless Comopolitans. It was released on the Belgian label Les Disques du Crepuscule in 1992. It was recorded