What is airborne transmission? WHO adds guidance on aerosols in coronavirus spread – NBC News
The World Health Organization has expanded its coronavirus guidance to include the possibility in certain circumstances of airborne transmission, in which the virus could be spread through tiny droplets that linger in the air.
The update came Thursday after an open letter signed by more than 200 scientists pressed the agency this week to acknowledge the potential role that tiny droplets, or aerosols, play in airborne transmissions among people in crowded, indoor settings for prolonged periods of time.
"There have been reported outbreaks of COVID-19 in some closed settings, such as restaurants, nightclubs, places of worship or places of work where people may be shouting, talking, or singing," the WHO said in its updated review of the evidence. "In these outbreaks, aerosol transmission, p...