As SARS-CoV-2 has continued to evolve and outsmart existing treatments, scientists have not let up looking for ever-more effective tools to keep people safe and successfully recover from COVID-19, and to prepare for future outbreaks.
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FDA OKs mixing COVID-19 booster shots, now what? ksat.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from ksat.com Daily Mail and Mail on Sunday newspapers.