> On Aug 14, 2020, at 2:03 PM, N.A. Neff <nancy.a.n...@gmail.com> wrote: > > Hi Rosemary, > > I am not a teacher but I've kept up on some of the relative risks, and the > effectiveness of some mitigation steps, and perhaps can offer a few > suggestions. > > Transmission via touching surfaces appears to be very rare for this virus. > If two things were done, everybody could handle everybody else's bobbins > with very close to zero risk. 1) Everyone wash their hands thoroughly at > the start of class, and again after each time they touch their face or > their mask, and 2) after washing their hands, everyone wipe their bobbins > at the start of class with a cloth dampened with 90% or higher isopropyl > alcohol. (It doesn't have to be dripping nor the bobbins rubbed, so it > won't damage any finishes ) > > Transmission is almost entirely respiratory, either via fine droplets or > via aerosols of virus particles. The former are what fall from the air > within about 6 feet -- hence the personal distancing -- and are blocked by > properly worn masks. > > The latter, however, the virus particles, don't fall out of the air, and in > crowded settings with poor ventilation can become quite concentrated, > leading to high rates of transmission. Most masks don't block these > particles. The main defense here is ventilation because one's risk of > infection is directly related to the size of the dose of virus you get. So > you need to dilute the concentration of airborne virus, or blow it away > altogether. > > By far the best thing is to hold your class outside, with fans if there > isn't a gentle breeze. The next best would be inside in as big a room as > possible, with outside air coming in, and fans preventing pockets of stale > air. In those situations, if you both have masks on, it would be safe for > both a student and the teacher for one to look over the other's shoulder, > etc. > > Finally, remember, all this is protection just in case you or someone in > your class is actually sick with covid. The best protection is for everyone > to agree not to come to class if they have a dry cough, trouble breathing, > or lose their sense of taste or smell. And take everyone's temperature when > they arrive for class -- no one should attend with a temp of 37.5°C or > above. > > In summary, from what I've read recently, ventilation is what's really key. > > I hope some of this helps. I can dig up a few articles that would cite > references if you would like them. > > Nancy > > Nancy A. Neff > Connecticut, USA > > On Fri, Aug 14, 2020, 15:31 Rosemary <rjbrow...@virginmedia.com> wrote: > >> >> I am planning how to return to teaching my lace class. >> > > Have any of you returned to teaching in class? Do please share your >> experiences of how Covid has changed your practices. >> >> Rosemary Brown >> > > - > To unsubscribe send email to majord...@arachne.com containing the line: > unsubscribe lace y...@address.here. For help, write to > arachne.modera...@gmail.com. Photo site: > http://www.flickr.com/photos/lacemaker/sets/
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