Defense Department study finds low risk of coronavirus infection through air on a packed airline flight

By Ian Duncan of The Washington Post. Excerpts:

"A Defense Department study of the risk of catching the coronavirus on a packed commercial flight concluded that a person would have to be sitting next to a infectious passenger for at least 54 hours to receive a dangerous dose of the virus through the air.

Researchers concluded, that if passengers wear surgical masks continuously, very little of the virus spreads because of how the air is circulated and filtered on the planes."

"The researchers, which included a team from the University of Nebraska, concluded that the virus was removed by the plane's air filtering systems 15 times as fast as in a typical home and five or six times as fast as what is recommended for hospital operating rooms and patient isolation rooms."