Why COVID’s XBB.1.5 ‘Kraken’ Variant Is So Contagious

https://www.scientificamerican.com/article/why-covids-xbb-1-5-kraken-variant-is-so-contagious/?utm_source=newsletter&utm_medium=email&utm_campaign=week-in-science&utm_content=link&utm_term=2023-01-13_featured-this-week&spMailingID=72547605&spUserID=MTEwMTQwMDYwODYS1&spJobID=2281280067&spReportId=MjI4MTI4MDA2NwS2