Professor YUEN Kwok-yung and his team proved the effectiveness of mask on hamster.
2/3 of hamster infected with no mask
1/3 of hamster infected with healthy hamster on mask
1/6 of hamster infected with sick hamster on mask
@zeynep
report by @cwylilianhttps://www.scmp.com/news/hong-kong/health-environment/article/3084779/coronavirus-hamster-research-proof-effectiveness …
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I haven’t proposed there’s evidence for false security (tho I can point to empirical evidence daily in my everyday life). Concerns re masks also include potential risk of transmission & there’s an evidence base for that in HCW pops. We don’t know if/how it translates to public.
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I’ve repeatedly said I’m not against masks. I wear one & promote the message of wearing them. I agree w many points you’ve made about their value beyond infection control (particularly wrt stigma). I respect your scholarship & writings on this. 1/2
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On side note, I also think there’s substantial value in looking at the public wearing face shields, which seem to have some advantages over masks. But I hesitate to cover it bc mask issue has been a mess in US. One thing I had def had right about masks is cultural resistance.
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Evidence for hand-washing effectiveness for COVID-19 is basically non-existent AFAICT. The CDC makes it pretty clear that surface-mediated transmission of COVID-19 is not likely to be significant. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/how-covid-spreads.html …pic.twitter.com/Ycs0uODDjr
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We know that hand washing destroys the lipid layer on the virus, but that's not much use if the virus isn't spread in practice through surfaces. May as well do it anyway, since it's a simple precaution to take, but not a good idea to focus on it.
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I think it is linked to some crazy fear it will lead to a form of accepting the burka in Western society
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