The important question though isn't whether this is possible but how frequent it is. It doesn't seem like this study can answer that. There are countries that took names for tracing purposes from restaurants, so there's no reason a good study with denominators couldn't be done?
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Replying to @WesPegden
You need proper large N studies for that, meanwhile we still cannot get people to accept the transmission paths highlighted by these studies, i.e. indoor dining is not a good idea.
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Replying to @zeynep
Obviously I agree this can make the case that these transmission paths can happen. But using the existence of any reports as the basis for policy decisions would ban outdoor dining as well, along with schools, etc.
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Replying to @WesPegden @zeynep
I agree with Wes. Be very careful when taking a single event and generalizing it. The article itself is fairly careful not to make stronger statements than warranted, using principles all scientists follow. "Evidence of..." "...is possible." In the event that the 1/2
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You gotta realize one case is already very significant with so few cases in East Asia. Chinese researchers also. published serval papers on how air flow results in long range transmission in restaurants & bus settings This is basically mask thing all over again
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I agree on the part about few cases in S. Korea. But, still, how can you reliably say that because this particular chain of transmissions happened this way, in this setting, it is more commonplace than other chains of transmission in other settings? You cannot. This is 1/2
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Replying to @CarloDallapicc1 @KuccoSong and
the foundation of statistical analysis to infer probability of different hypotheses. The bus of monks and the restaurant in China are two other well-documented cases. The statistics on which we are trying to base broad conclusions is very small, unfortunately. 2/3
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Replying to @CarloDallapicc1 @KuccoSong and
There are too many things being inferred, without a legitimate basis. Maybe you think I am being overly rigorous in my reasoning - but this is how scientists reason and reach conclusions.
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Or maybe you are not following the evidence, if you only knw three cases. There's a database with 1600+ mass transmission events (more than a few people infected) and there are only maybe two pure outdoor cases. There have been thousands and thousands of reports.
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Replying to @zeynep @CarloDallapicc1 and
I'm not a frequentist, but I don't think we need to settle that dispute to conclude that after eleven months and thousands and thousands of of cases reported from all over the world, we can couple those with lab studies and make some inferences about what's happening.
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(I should add that I would also like systematic studies for a better denominator but I feel pretty confident that we can say that unmasked indoor dining/talking activities represent a distinct class of high risk, like choirs, and should be avoided).
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