A study linking coronavirus transmission to an air-conditioning unit has highlighted a potential challenge for restaurants and other businesses as the US takes steps to reopen from pandemic lockdown.

Researchers in China conducted a limited study after an incident in January where one diner infected nine others at a restaurant in the city of Guangzhou.

“We conclude that in this outbreak, droplet transmission was prompted by air-conditioned ventilation. The key factor for infection was the direction of the airflow,” researchers from the Guangzhou Center for Disease Control and Prevention said. Their report will be published ​in the Centers for Disease Control and Prevention’s Emerging Infectious Diseases journal in July.

Source: https://www.independent.co.uk/environment/coronavirus-air-conditioning-droplets-spread-virus-a9487026.html