Why XBB.1.5 — the latest Omicron offshoot — could 'outcompete' other COVID-19 subvariants January 05, 2023 The Omicron offshoot XBB.1.5 is rising rapidly south of the border and has been reported in 25 countries. Scientists say it could dominate COVID-19 cases, but that doesn't necessarily mean it'll stick around. Labels: CBC | Health News health Share to: Twitter Facebook URL Print Email
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