Polio vaccine polio and post-polio syndrome. In the United States, vaccine is administered along with the tetanus, diphtheria, and acellular pertussis vaccines (DTaP) and a pediatric dose of hepatitis B vaccine. In the UK, IPV is combined with tetanus, diphtheria, pertussis, and "Haemophilus influenzae" type b vaccines. OPV is an attenuated vaccine, produced by the passage of the virus through nonhuman cells at a subphysiological temperature, which produces spontaneous mutations in the viral genome. Oral polio vaccines were developed by several groups, one of which was led by Albert Sabin. Other groups, led by Hilary Koprowski and H.R. Cox, developed their own
His Name Is Legs (Ladies and Gentlemen) before undertaking a much-anticipated North American tour with Ravi Shankar. With Peter Sellers among his entourage, Harrison alternatively adopted comedy and his Hindu-aligned spiritual goals as a defence against expectations related to his Beatle past during the tour.<ref name="Fong-Torres/2001">Ben Fong-Torres, "George Harrison: Harrison in the Haight", "San Francisco Chronicle", 2 December 2001; available at Rock's Backpages (subscription required).</ref> When discussing "His Name Is Legs" with BBC Radio 1 DJ Paul Gambaccini in September 1975, Harrison said that after recording the basic track, he invited Smith to sing the first two lines of each of the bridges. Smith did these vocal