Britain and Canada have authorized another round of booster shots for older and immunocompromised people, for whom Covid still poses a formidable risk. So far, U.S. officials haven’t followed suit.

Britain and Canada have authorized another round of booster shots for older and immunocompromised people, for whom Covid still poses a formidable risk. So far, U.S. officials haven’t followed suit. https://t.co/zARVTM0Ms2

— The New York Times (@nytimes) March 25, 2023