With students preparing to return to the classroom after a long, hot summer, the Centers for Disease Control and Prevention updated its guidance to prevent SARS-CoV-2 transmission in schools, preschools, and child care facilities. BA.5 is now the predominant Omicron subvariant in the United States, accounting for almost 90% of new cases of COVID-19, according to the CDC COVID Data Tracker . It is the most contagious version of coronavirus thus far, and new mutations to the pathogen’s genome are expected to evolve as time goes on. The trend in deaths from coronavirus in the U.S. has been fairly steady during the summer — roughly 350-450 Americans die every day from COVID-19. (The Johns Hopkins University Coronavirus Resource Center estimates 1,037,001 have died — 6.4 million globally — since the outbreak was declared a national public health emergency 29 months ago). While it’s clear the virus can still do some serious damage, the fact that so many people have received vacci...