If nothing else, it's incredibly difficult/impossible to distinguish between disease spread that happens when droplets hang in the air for a few seconds, or a few minutes, or other forms of close contact spread (i.e. fomites)
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Moreover, the advice doesn't really change! My infectious disease colleagues were saying ~in Feb~ that better ventilation wouldn't hurt Probably not going to be a defining characteristic in disease spread, might do almost nothing, but still worthwhile!
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But thing is, when you say "airborne" people don't imagine enclosed rooms and poor ventilation, they think shopping centres and car parks because that's what airborne traditionally means
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So I personally think this is more about physical scientists insisting that we all use very strict terminology, rather than the words that epi has been using for ages to describe these things
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And for the record, I find the attitude of physical scientists here very frustrating. It's not just a simple debate over semantics, saying the virus is airborne changes pretty much everything about the response to COVID-19!
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End of conversation
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He at least has a point. We do need jargon, because it let's experts discuss fine differences w/same understanding. Experts also need to be able to "clear speak" to convey core information. And we should assume worst case until proven otherwise in this case. It's airborne.
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