Your regular reminder that we've known for some time that SARS-CoV-2 isn't "airborne" in the colloquial sense, the debate is about communication rather than science
Well in Australia the unknown contact cases make up only ~10% of all cases, not sure if that's a large fraction in this definition. And yes as I said it's ~possible~ but we're really more interested in whether it's likely or common
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10% is a very substantial number. But the main point is we should (and do) warn people against large crowds.
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Sure, but that's not 10% caused by unknown transmission, it's 10% where we haven't been able to track back to a specific outbreak. In some states that number is almost 0% here. Not saying crowds are safe, obviously
End of conversation
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