In 1962 Dallas County #Texas vaccinated 950,000 residents against the poliovirus in two days, ensuring an immunization rate well over 90%. https://t.co/YccXbynX99
— Cleavon MD 💉 (@Cleavon_MD) Jul 23, 2021
via Twitter https://twitter.com/Cleavon_MD
July 24, 2021 at 02:34AM
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