Read on Twitter
. @BristolUniversi's policy is scientifically illiterate. Should be the other way around: masks even if one can maintain 2m distance, to protect against aerosol transmission. Visors in addition, to protect against droplets if one can't maintain 2m distancing. ( @Bristol_UCU)
1/2 https://twitter.com/jim_dickinson/status/1306859260693934080
1/2 https://twitter.com/jim_dickinson/status/1306859260693934080
See these FAQs by aerosol experts, including 7.13: 2/2 https://docs.google.com/document/d/1fB5pysccOHvxphpTmCG_TGdytavMmc1cUumn8m0pwzo/edit#heading=h.r6e04p8gu9l5
I hear that KCL is also recommending visors, not masks. I wonder whether, therefore, this is on advice of the @RussellGroup.
Further confirmation of the irresponsibility of @BristolUniversi's policy. https://www.theguardian.com/world/2020/sep/22/face-shields-ineffective-trapping-aerosols-japanese-supercomputer-coronavirus
Click here & read upward for subthread on @KingsCollegeLon's policy: https://twitter.com/MikeOtsuka/status/1307184523067764736
Also click here & read upwards, for the solution to the problem of masks preventing lip-reading: https://twitter.com/MikeOtsuka/status/1308324447200391169
See here for views of an expert on aerosol transmission & SAGE member
. https://twitter.com/CathNoakes/status/1309946573313445888
. https://twitter.com/CathNoakes/status/1309946573313445888
Department for Education confirms the above.
https://www.bbc.co.uk/news/uk-northern-ireland-54287342
https://www.bbc.co.uk/news/uk-northern-ireland-54287342
I see that, a day or two after I posted my tweet at the top of this thread, Bristol changed their policy so that now masks (as well as visors) are required in the classroom. Welcome change, though I think their rise in 'R' rationale is a fig leaf. https://thetab.com/uk/bristol/2020/09/21/breaking-masks-and-visors-now-required-in-bristol-uni-classes-41933
