WHO Says Coronavirus Going Airborne Indoors 'Cannot Be Ruled Out'
The World Health Organization has updated its guidelines on how the coronavirus is transmitted, stating that the likelihood that the virus can go airborne, particularly in enclosed spaces like restaurants and gyms, “cannot be ruled out.”
In its updated guidelines issued Thursday, the WHO cited multiple reported outbreaks of COVID-19 involving people who became infected after being in crowded indoor spaces, including fitness classes and choir practice.
“In these events, short-range aerosol transmission ― particularly in specific indoor locations, such as crowded and inadequately ventilated spaces over a prolonged period of time with infected persons ― cannot be ruled out,” the WHO concluded while acknowledging that more research is needed.
The organization had previously refrained from including airborne transmission among the virus’s potential modes of transmission among the general public. It did state that airborne transmission “may be possible” in specific medical settings and circumstances that involved aerosol-generating treatments.
WHO Chief Scientist Dr Soumya Swaminathan said in an interview with India Today on Wednesday that there’s still no concrete proof that airborne transmission of the coronavirus is happening, but there are enough reported instances of its spread in closed settings to warrant proper attention and extra precautions.
These precautions include wearing a mask and trying to avoid relatively small enclosed places, like bars and clubs. This is because respiratory droplets that are less than 5 microns in size, called droplet nuclei or aerosols, “can stay in the air for a little bit of time and they can take a little longer to settle on the ground,” Swaminathan said. “These particles could be inhaled by other people who are in the vicinity, in the room, and this could be called airborne transmission.”
Fortunately, the virus does not appear to be truly airborne, like the measles virus is. If it were, far more...
