CDC Says New Mask Guidelines Informed by Cape Cod Outbreak - WSJ

“If you’re vaccinated and you get infected and you have a fever and you’re hacking up a lung and you have a sore throat—no one would question that in that case, you need to wear a mask,” Dr. Jha said. “The real question is, should asymptomatic vaccinated people be wearing mask to prevent spread to others? And I have not seen any data that supports that yet.”