Study : Two metres distancing not enough without masks for preventing Covid-19

According to researchers from Quebec Illinois and Texas to prevent the spread of COVID 19 indoors the two metres physical distancing guideline is not enough without masks The findings of the study were published in the journal Building and Environment Wearing a mask indoors can reduce the contamination range of airborne particles by about 67 per cent In this study researchers found that when people are unmasked more than 70 per cent of airborne particles pass the two metres threshold within 30 seconds By contrast less than 1 per cent of particles cross the two metre mark if masks are worn