View Single Post
Old 25th June 2020, 12:20 PM   #4
Master Poster
marting's Avatar
Join Date: Sep 2003
Posts: 2,802
What is the evidence to support the 2-metre social distancing rule to reduce COVID-19 transmission?

Very long survey of scientific reports relative to droplet/aerosol spreads:

A one-size-fits-all 2-metre social distancing rule is not consistent with the underlying science of exhalations and indoor air. Such rules are based on an over-simplistic picture of viral transfer, which assume a clear dichotomy between large droplets and small airborne droplets emitted in isolation without accounting for the exhaled air. The reality involves a continuum of droplet sizes and an important role of the exhaled air that carries them.

The Atheist's post above re meat packing plants is a unique example of ventilation spread which has caused thousands of infections. High volume of air flow. Recirculation with little or no outside air, and low temp ( 10C ) may make these facilities special cases. Be interesting to see what published studies come out.
Flying's easy. Walking on water, now that's cool.

Last edited by marting; 25th June 2020 at 12:37 PM. Reason: add meat packers
marting is online now   Quote this post in a PM   Nominate this post for this month's language award Copy a direct link to this post Back to Top