Airborne: Aerosols or droplets

One of the problems facing us in the COVID-19 pandemic has been, how does the virus spread. It has been established that it is airborne in aerosols but that conclusion – or correction from droplets – took a long time coming, for a reason:

[…] after Wells died, scientists inside the CDC conflated his observations. They plucked the size of the particle that transmits tuberculosis out of context, making 5 microns stand in for a general definition of airborne spread. Wells’ 100-micron threshold got left behind. “You can see that the idea of what is respirable, what stays airborne, and what is infectious are all being flattened into this 5-micron phenomenon,” Randall says. Over time, through blind repetition, the error sank deeper into the medical canon.
— “The 60-Year-Old Scientific Screwup That Helped Covid Kill

 

 

 

 

 

 

 

 

 

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