https://www.scientificamerican.com/article/what-we-know-about-omicrons-ba-2-variant-so-far1/?utm_source=newsletter&utm_medium=email&utm_campaign=week-in-science&utm_content=link&utm_term=2022-04-08_featured-this-week&spMailingID=71462117&spUserID=MTEwMTQwMDYwODYS1&spJobID=2238861853&spReportId=MjIzODg2MTg1MwS2
