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Allegiant Air removed a man after he repeatedly interrupted the pre-flight safety briefing to tell the flight attendant to put her mask back on.

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A new study conducted for the Department of Defense adds credence to the growing belief that airline passengers face minimal risk of contracting coronavirus when flying.

The study found the risk of aerosol dispersion – transmission of the virus through the air – was reduced 99.7% thanks to high air exchange rates, HEPA-filtered recirculation and downward ventilation found on modern jets.

Investigators looked at the impact of an infected passenger on others seated in the same row and those nearby in the cabins of Boeing 767s and 777s. Those two aircraft types are widebodies typically used for long-haul flights where a virus would be expected to spread more easily.

To test the exposure risk for passengers sitting near an infected person, researchers released fluorescent