Hello, dear readers, and welcome to a bonus letters column. We’ll begin with the latest data that show this winter is shaping up to be another “tripledemic.” Influenza and respiratory syncytial virus, or RSV, are surging throughout the United States, and new cases of COVID-19 are not far behind. Please protect yourselves and the people around you by getting this year’s flu vaccine and the updated COVID shot. It’s not too late for either of these, and there is evidence that getting both at once boosts immune response. For people who are most at risk of RSV, a monoclonal antibody injection is available. And now, onward to your letters.