ON THIS DAY: February 23, 1954, Dr. Jonas Salk begins first mass polio vaccination in Pittsburgh - WPXI Pittsburgh
ON THIS DAY: February 23, 1954, Dr. Jonas Salk begins first mass polio vaccination in Pittsburgh - WPXI Pittsburgh ON THIS DAY: February 23, 1954, Dr. Jonas Salk begins first mass polio vaccination in Pittsburgh - WPXI Pittsburgh Pandemic Parallels: Older adults remember polio vaccines - Lynchburg News and Advance The tragic story of a Canadian vaccine trailblazer - Maclean's ON THIS DAY: February 23, 1954, Dr. Jonas Salk begins first mass polio vaccination in Pittsburgh - WPXI Pittsburgh Posted: 22 Feb 2021 09:18 PM PST The clinical trials of the vaccine on 1.8 million schoolchildren, called " polio pioneers ," that had begun in Pittsburgh in 1954, were completed by April 12, 1955, when the vaccine was announced as safe and effective. A nationwide inoculation campaign was immediately launched, though it was briefly suspended after more than 200,000 people were injected with a bad batch of the vaccine f...