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- The first 22 million Americans have been vaccinated against COVID-19, and initial safety data shows all is well, CDC saysUSA TODAY
- Five or six doses? Controversy over Pfizer vaccine vialsYahoo News
- EXPLAINER: Why it is difficult to manufacture vaccines and increase suppliesAssociated press
- Known and Unknown Knowledge of COVID-19 Vaccines | The hillThe hill
- CNN analysis suggests 12% – and no less than a third – of the US population may currently have some protection against Covid-19WHAT
- View full coverage on Google News
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