This is pretty important proof of aerosol transmission in a room that has eliminated other possibilities. It’s why to take the ‘weird’ measures like time limits, ventilation & no loud noise seriously as all reduce level of exposure. Stay outdoors or at least open a window https://twitter.com/jljcolorado/status/1306450428867964930">https://twitter.com/jljcolora...

On a practical level this link to a FAQ on aerosol transmission was posted to the comments. This should be of particular interest to teachers & anyone else who has to spend hours in a room with the same group of people. https://docs.google.com/document/d/e/2PACX-1vTgVkamic82Ux90zCWb5NFC6gYcDSWKYxKgh2y49uHQ5OJfGBAuQXs8igbmOaGqODI9wJ0UUnpo1dZu/pub">https://docs.google.com/document/... @asti

If you are thinking ‘isn’t this old news’ yes in a sense it’s is, news & speculation of this outbreak has been around for months. However this research has now gone through peer review which makes the findings considerably more robust & unlikely to be a methodological failure https://twitter.com/shellymboulder/status/1306352867213631488">https://twitter.com/shellymbo...

It is worth saying that 2.5 hours is a long time & singing produces a lot of aerosol so this doesn’t impact on the idea that short range droplets with max ranges of 1 to 2m are the primary route for most infections. This is a ‘but also’

It’s very relevant to pub openings, in particular if loud music or sports mean people have to be shout to be heard or sing / chant / cheer all of which produce a lot more aerosol. Needs more research to quantify risk but I’d be very nervous watching a football match in a pub

Here’s a meta review if IFR by age pulling from multiple sources