A string of new studies has confirmed the silver lining of the Omicron variant: Even as case numbers soar to records, the numbers of severe cases and hospitalisations have not. The data, some scientists say, signal a new, less worrying chapter of the pandemic. The development comes as more than 1 million people in the US were diagnosed with Covid-19 on Monday as a tsunami of Omicron swamps every aspect of daily American life.

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