why 6 feet apart?

why 6 feet apart?
Since people can spread the virus before they know they are sick, it is important to stay at least 6 feet away from others when possible, even if you—or they—do not have any symptoms. Social distancing is especially important for people who are at higher risk for severe illness from COVID-19.
Full answer in: www.cdc.gov
More questions like: why 6 feet apart?
Can I be infected with COVID-19 if I am more than 6 feet away?
See full answer CDC continues to believe, based on current science, that people are more likely to become infected the longer and closer they are to a person with COVID-19.
Today's update acknowledges the existence of some published reports showing limited, uncommon circumstances where people with COVID-19 infected others who were more than 6 feet away or shortly after the COVID-19-positive person left an area.
In these instances, transmission occurred in poorly ventilated and enclosed spaces that often involved activities that caused heavier breathing, like singing or exercise. Such environments and activities may contribute to the buildup of virus-carrying particles. Oct 5, 2020
Full answer in: www.cdc.gov
How far can the coronavirus spread through the air?
Virus-laden small (<5 μm) aerosolized droplets can remain in the air and travel long distances, >1 m. Apr 2, 2020
Full answer in: wwwnc.cdc.gov
Should I wear a mask and maintain 6 feet of distance to help protect against COVID-19
In every location, all employees need to either maintain at least 6 feet of distance from other people at all times, or wear a mask. In clinical areas where 6 feet of space between people cannot be maintained, clinical masks (ear loop/procedure masks) need to be worn. Feb 19, 2021
Full answer in: health.ucdavis.edu