Booster shots are now being given here in Massachusetts, followingCenters for Disease Control guidance issued on Friday that all people 65 or older, those who have underlying health conditions, or those who work in professions considered to have an elevated risk of exposure should all get booster shots if they are at least six months removed from their second dose of the Pfizer vaccine.

Meanwhile, at least six lawsuits have been filed here in Massachusetts, seeking to overturn school mask mandates, even as the Department of Elementary and Secondary Education extended the date on its mask mandate at least to November 1. We talk about it all, and take listener questions, with Dr. Sabrina Assoumou, assistant professor of medicine at the Boston University School of Medicine and infectious disease specialist at Boston Medical Center, and Dr. Helen Boucher, infectious disease physician at Tufts Medical Center and interim dean of the Tufts University School of Medicine.