infection rates

Fully vaccinated people can still contract the novel coronavirus, including the Delta variant, but COVID-19 infection is far more common and widespread among the unvaccinated

Dear Doctor: Does outlook really matter when it comes to lifespan, as a recent study suggested? I'm not a wet blanket, but I don't have a relentlessly sunny disposition either. Dear Reader: Let's say it's a gray, cloudy Monday morning. You're [...]