Social distancing for covid-19: is 2 metres far enough?

Introducing blanket policies for the public to wear face masks has major problems, many of which have been pointed out.123 “In theory, wearing masks could instil a false sense of security,”1 but “given the gravity of the pandemic, indirect evidence of benefit combined with the low risk of harm should outweigh the absence of direct evidence supporting mask wearing by the general public.”2

There is another important, yet not widely debated, risk …