When Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky, MD, MPH, announced last week that fully vaccinated Americans no longer had to wear masks in most indoor settings unless local mandates dictate so, many public health experts scratched their heads and braced themselves for what they knew would be a confusing moment in America's battle against COVID-19."The CDC got the science right, but the policy and communication was really wrong," said Leana Wen, MD, the former Baltimore health commissioner and Washington Post contributing columnist and CNN medical analyst. "There are unintended consequences that can endanger people and sew distrust in the CDC."Each week, more studies are published that show the three