coronavirus Omicron XBB.1.5 does not have mutations known to make people sicker, WHO says – CNBC Posted on January 11, 2023 by admin Omicron XBB.1.5 does not have mutations known to make people sicker, WHO says CNBC admin The covert winter wave of Covid-19 – BBC Doctors concerned over recent surge in COVID-19 cases – CBS News
