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.
from CNN.com - RSS Channel - HP Hero https://www.cnn.com/2023/01/03/health/covid-variant-xbb-explainer/index.html
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