In February 2020, China implemented a strict lockdown to control the spread of a newly emerged coronavirus. Lidia Morawska, an air quality expert, suspected the virus was airborne, contrary to common belief that focused on surface transmission. She and colleague Junji Cao warned medical journals of the dangers of ignoring this mode of transmission, but faced repeated rejections. It took over two years for the WHO to recognize airborne spread. Currently, researchers are concerned about H5N1 bird flu potentially becoming airborne, necessitating close observation to prevent a future outbreak.
In early February 2020, China locked down more than 50 million people, hoping to hinder the spread of a new coronavirus.
Ignoring the airborne spread of the virus would lead to many more infections, said Dr. Morawska.
It took more than two years for the World Health Organization to officially acknowledge that Covid spread through the air.
Flu experts are anxiously tracking changes to H5N1 that could allow the virus to become airborne.
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