How U.S. airlines are trying to stop COVID-19 on flights
(WorldNews Business)

CHICAGO — As some Americans prepare to travel for the July 4 holiday weekend, and airlines slowly ramp up service, the U.S. government has not changed rules for air travel during the pandemic, leaving airlines to implement their own measures. Most are taking what they call “a layered-approach.” That is the trick, according to infectious disease specialist Dr. William Schaffner of the Vanderbilt University Medical Center: “To implement a series of measures that work together to reduce risk. You can’t rely solely on any one...