Cold War tensions and the polio vaccine Sabin vaccine from the Soviet side. However other Soviet virologists argued that the Salk vaccine could be considered safe, since the Americans tested it on their own people. They considered that the Sabin vaccine must be potentially dangerous because the Americans did not wish to test it on their own society. The documented achievement of the Sabin-Chumakov collaboration eventually trumped the ideological differences of the Cold War. Their oral live-virus vaccine became federally licensed in 1962, and used for over three decades to help eliminate polio globally, replacing the Salk vaccine. Using these vaccines, the threat of polio remains only
First of His Name reads: "Only slow by "Game of Thrones" standards, "First of His Name" demonstrates how carefully constructed this show has been since season one." Matt Fowler of "IGN" gave the episode a 9/10 writing that the episode "gave us a much-needed look back at some past events on the series." He highlighted the revelation that Littlefinger's actions "put the story of the entire series into motion." Erik Adams of "The A.V. Club" gave the episode an A and praised the writers for their focus on the female characters. First of His Name "First of His Name" is the fifth episode of