Midway International Airport's air traffic control tower has been temporarily closed after "several" air traffic controllers at the airport tested positive for the coronavirus, the Federal Aviation Administration said.
"The air traffic control tower at Midway Airport is temporarily closing while we ensure a safe work environment for air traffic controllers and technicians," the FAA said in a statement. "The FAA continues to maintain close contact with airports, airlines and other stakeholders during this situation."
A ground stop has been ordered, according to the flight-tracking website Flight Aware, which means that all inbound flights to Midway that have not already departed will be held at their point of origin.
"The airport remains open and operations will continue at a reduced rate until the situation is resolved," the FAA also said. "The air traffic system is a resilient system with multiple backups in place. This shift is a regular execution of a longstanding contingency plan to ensure continued operations."