Experts warn that a massive Covid-19 case spike in the US driven by the highly contagious Omicron variant will be different to previous surges

The US kicked off 2022 amid a massive Covid-19 case spike — driven by the highly contagious Omicron variant — that some experts warn will be different than any other time in the pandemic.The US kicked off 2022 amid a massive Covid-19 case spike — driven by the highly contagious Omicron variant — that some experts warn will be different than any other time in the pandemic.