In 1958, “the federal government approved an oral polio vaccine, developed by Sabin’s laboratory in Cincinnati, containing weakened, not inactivated, virus,” states the article. “By the end of that year, polio infections were down 90 percent from 1955 levels. In 1979, the country recorded its last community-transmitted case.
"Today, decades into a global vaccination campaign, polio persists in just three countries. The battle against the disease has been a century-long march. And it has required a sustained commitment to continuing polio vaccination — a commitment now compromised as global polio vaccination efforts have been put on hold to slow the coronavirus’s spread."
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