MontrealQuebec detects 8 cases of highly contagious Omicron subvariant XBB.1.5, now dominant in U.S. by MontrealOfficialJanuary 5, 2023030 Share0 Quebec’s public health scientists confirm they’ve detected eight cases of the highly transmissible Omicron subvariant XBB.1.5 in COVID-19 test samples. Source