You didn't read the articles. The issue is not sneezing! It is breathing. And talking. The articles indicate that you can catch the Covid-19 disease from aerosols whose sizes are 5 microns. Not only that, they can hang in the air for much longer than droplets from coughing and sneezing. And 2 meters is not the safe distance...it's more like 7 to 8 meters.
Combine this with the face that 40 to 50 percent of infected people are asymptomatic while still shedding huge numbers of virions....well, Brix said today to not even go to the grocery store. And a balaclava isn't much protection. Cheers. On Sat, Apr 4, 2020 at 10:46 PM <mix...@bigpond.com> wrote: > In reply to Terry Blanton's message of Sat, 4 Apr 2020 19:46:56 -0400: > Hi, > [snip] > >5000 nm is pretty small. How many SARS-CoV-2 Virions will fit in one > >aerosol particle? > > The only reference I could find for the size of the virus is 0.1 micron. > So assuming that both measures (i.e. 0.1 & 5) > refer to a diameter, and volume goes as the cube of diameter that means at > most 50^3 = 125000 (which ignores packing > factor) in one aerosol particle, probably much less of course. However > droplets (sneezing) are usually larger than 5 > microns AFAIK. > [snip] > Regards, > > > Robin van Spaandonk > > local asymmetry = temporary success > >
