FILE - In this June 5, 2019, file photo, Dr. Randall Williams, Director of the Missouri Department of Health and Senior Services, speaks with reporters in St. Louis. Williams told a House committee on Tuesday, Nov. 10, 2020, that he expects a COVID-19 vaccine to be available for a limited number of people by mid-December. Pfizer on Monday, Nov. 9 announced it has developed a vaccine that has proven 90% effective in early testing. (Robert Cohen/St. Louis Post-Dispatch via AP, File)
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