How much should people worry about Covid's newly-dominant XBB.1.5 variant? Our medical analyst explains
by from CNN.com - RSS Channel - App International Edition on (#67RP5)
A new Covid-19 variant, XBB.1.5, is spreading rapidly throughout the United States. In December 2022, the proportion of new Covid-19 infections due to this Omicron offshoot have increased from 4% to 18%, according to a January 6 release from the US Centers for Disease Control and Prevention, and is projected to rise further still. In some parts of the country, it constitutes more than half of all new infections. According to the World Health Organization, XBB.1.5 is the most transmissible form of Omicron yet.