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Science

Brain fog and other long COVID symptoms affect millions. New treatment studies bring hope

This May 4, 2020, file photo provided by the University of Maryland School of Medicine, shows the first patient enrolled in Pfizer's COVID-19 coronavirus vaccine clinical trial at the University of Maryland School of Medicine in Baltimore. (Courtesy of University of Maryland School of Medicine via AP)
United States

Pfizer: COVID-19 shot 95% effective, seeking clearance soon

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