Pfizer's Covid-19 antiviral pill was hailed as a game-changer, but supplies are scarce

The Omicron variant of the coronavirus is causing Covid-19 cases to spike, with an average of more than 747,000 new cases a day, according to the latest numbers from Johns Hopkins University. That's almost three times the average daily cases from a year ago, when the country was going through its previous peak, and it's putting an incredible strain on hospitals and emergency rooms.

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