ATLANTA—Travelers on airplanes and public transportation like buses and subways will be required to wear face masks starting next week to curb the spread of COVID-19. The U.S. Centers for Disease Control and Prevention issued a mask-wearing rule late Friday that builds on an order announced Jan. 21 by President Joe Biden. The rule “will protect Americans and provide confidence that we can once again travel safely even during this pandemic,” said Dr. Marty Cetron, director of CDC’s division of migration and quarantine, who signed the order. The 11-page CDC order takes effect just before midnight on Monday night. It makes refusal to wear a mask a violation of federal law, enforced by the Transportation Security Administration and other federal, state, and local authorities. The rule applies to passengers on airplanes, trains, subways, buses, taxis, and ride-shares. It says travelers must wear a mask that covers their nose and mouth …