Covid news: omicron XBB.1.5 is immune evasive, binds better to cells
https://www.cnbc.com/2022/12/30/covid-news-omicron-xbbpoint1point5-is-highly-immune-evasive-and-binds-better-to-cells.htmlHealth Experts Warily Eye XBB.1.5, the Latest Omicron Subvariant - The New York Times
https://www.nytimes.com/2023/01/07/science/covid-omicron-variants-xbb.htmlNew Covid strain is the most transmissible yet, WHO says - POLITICO
https://www.politico.com/news/2023/01/04/new-covid-strain-xbb-00076320