The Centers for Disease Control and Prevention (CDC) may have increased the threat of COVID-19 infection in the Black community and among some other racial and ethnic minority groups when the agency updated its mask guidance last May, according to a new commentary in the Journal of General Internal Medicine by two colleagues at Massachusetts General Hospital (MGH). At the time, the CDC announced that fully vaccinated people could go without masks in most circumstances, a policy recommendation that was intended to help restore a sense of normalcy, yet ignored certain realities that left some groups vulnerable, the authors argue.