To prevent the spread of COVID-19 indoors, the two meters physical distancing guideline is not enough without masks, according to researchers. However, wearing a mask indoors can reduce the contamination range of airborne particles by about 67 percent.
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/10/211005124725.htm
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/10/211005124725.htm
COVID-19: Without masks, two meters distancing is not enough, research finds
![COVID-19: Without masks, two meters distancing is not enough, research finds]()
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October 05, 2021
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