Registered nurse Tiffany Robles gives a COVID-19 vaccine booster shot to Jeffery Clark at a Chicago senior center on Oct. 27, 2021. Although the lion’s share of COVID-19 infections and deaths in the ...
The vaccine needs to be stored at around -70 degrees Celsius. Early data revealed Monday that Pfizer's COVID-19 vaccine candidate could be up to 90% effective. The company still needs to submit its ...
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