Omicron offshoot XBB.1.5 could drive new Covid-19 surge in US | CNN
The CDC estimates that XBB.1.5 has more than doubled its share of the Covid-19 pie each week for the last four, rising from about 4% to 41% of new infections over the month of December.
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For weeks, scientists have been watching a slew of Omicron descendants duke it out for dominance of Covid-19 transmission in the United States, with the BQs – BQ.1 and BQ.1.1 – seeming to edge out all the others to claim a slight lead.
The result has been a gradual rise in cases and hospitalizations that never seemed to reach the peaks of this summer’s BA.5 wave and was certainly nothing like the tsunami of illness caused by the original Omicron strain a year ago.
But on Friday, the US Centers for Disease Control and Prevention’s Covid-19 variant dashboard revealed a new dark horse that could soon sweep the field: XBB.1.5.
The CDC estimates that XBB.1.5 has more than doubled its share of the Covid-19 pie each week for the last four, rising from about 4% to 41% of new infections over the month of December. In the Northeast, the CDC estimates, XBB.1.5 is causing 75% of new cases.