...work do need to do a better job of communicating clearly and consistently, via social and mainstream media and their own published materials. I hope in the pandemic post-mortem this is addressed. It would be tremendously useful to all the experts here as well.
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Replying to @angie_rasmussen @zeynep and
I think the key question in any postmortem, was the lack of or insufficient discussion about aerosol transmission a significant contributor to spread? Regardless of the platform (only a small proportion of the population uses twitter), was this a *massive failure* or not?
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Replying to @samhorwich @angie_rasmussen and
It's December 1st & today the WHO *finally* updated guidance to say "if ventilation is poor wear masks indoors even if separated by 1m/3ft." Until now—eleven months!—WHO didn't advise people to wear masks indoors if one was a mere meter away from others. Very much a failure imo.
5 replies 29 retweets 114 likes -
Replying to @zeynep @samhorwich and
I wrote a single article on ventilation and still constantly contacted by desperate people whose workplace guidance has huge emphasis on deep cleaning (with bleach! indoors! without ventilating it out!) but either no or vague advice on ventilation. We didn't get here by accident.
2 replies 2 retweets 38 likes -
Replying to @zeynep @samhorwich and
So Twitter help aside, people needed simple, actionable guidelines and proper intuition about transmission. In my view, some concerns here about the word aerosol/airborne/analogies may apply to healthcare settings but were not a problem with public discussion.
4 replies 2 retweets 17 likes -
Replying to @zeynep @samhorwich and
I think it critical to stress that the issue of onward transmission and areosolization is extraordinarily complex w/in epi dynamics and there is no robust consensus, particularly w/ C19. Likewise, we have little data on public response to risk comms in C19. Caution is warranted.
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Replying to @DrJaimeAnne @samhorwich and
I don't think there's much disagreement that aerosol transmission occurs, and it is critical especially in superspreading events which are widely documented to be key drivers of the epidemic. The exact proportion will likely be never known but guidance failure is obviously there.
2 replies 2 retweets 20 likes -
Replying to @zeynep @samhorwich and
I would respectfully disagree
@zeynep that the evidence on the routes/mechanisms of transmission and pathogensis are well-characterized or resolved. I would make the same argument for the scientific uncertainty surrounding risk response to communication about it as well.1 reply 0 retweets 1 like -
Replying to @DrJaimeAnne @samhorwich and
Is there dispute that there is some level of transmission longer than one meters, especially in poorly- ventilated indoors? Even CDC and WHO say this now, I hardly see a lot of controversy over this anymore to be honest. What proportion etc. are good questions but unclear.
2 replies 3 retweets 9 likes -
Replying to @zeynep @samhorwich and
@zeynep What is most clear from an evidenced perspective is that there are likely multiple routes of transmission (common in resp. viruses). Again, impact of those routes on epi dynamics and pathogenesis is *unclear* and all caution is therefore warranted around those findings.2 replies 0 retweets 0 likes
Caution warranted how? There are multiple routes (no dispute) and these include instances beyond one meter (have seen no dispute). Caution in making statement on exact proportion of transmission? Sure. But that's not public's concern. They need guidance. Practically means what?
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Replying to @zeynep @samhorwich and
@zeynep I’d say there’s no consensus on the < one meter argument, and again, magnitude of that route is an unknown. I’d exercise caution on making broad generalizations of certainty on what the public is seeing, processing, and changing based on these discussions, though.1 reply 0 retweets 0 likes -
Replying to @DrJaimeAnne @samhorwich and
So we disagree. I don't really encounter many experts who claim one meter is enough indoors, and even the CDC and WHO have moved beyond that finally, and I think we have clear evidence on what the public is seeing and doing, and we have the guidelines right in front of us.
1 reply 0 retweets 4 likes - Show replies
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