Asia has been there for a while.
Then CDC half way.
Germany accepted.
WHO will get there but has holdups on its guidance committee.
Now Canada taking steps.

Be on the leading edge of science.

Sign the petition to push the WHO to make clear SARS-CoV-2 travels through the air. https://twitter.com/covidisairborne/status/1323571291463573505
Link to Canada slowly coming around ... https://twitter.com/jmcrookston/status/1325925030866391041
Link to the Chief Science Advisor of Canada"s report on the role of bioaerosols and COVID-19.

Lots of hedging language around droplets which is a shame but on the flip side good practical ventilation flowcharts.

https://www.ic.gc.ca/eic/site/063.nsf/eng/h_98176.html
CDC accepts: https://twitter.com/jmcrookston/status/1335964417213796353
Italy accepts: https://twitter.com/jmcrookston/status/1335964508016218112
Japan has long accepted: https://twitter.com/jmcrookston/status/1335966893514108929
Canada quietly trying to slip one past us: https://twitter.com/jmcrookston/status/1335968213172166659
By the way, the Canadian report calls aerosol transmission "circumstantial".

Guess what? Droplets are circumstantial!

Guess what again? Fomites are circumstantial too!

It's all circumstantial.

We can't track a single virion into a body. Period. So how they get in is inferred
But guess what?

When we use the 2 row forward/back rule (droplet) in airplanes, it doesn't work.

When we use droplet 2m rule (which comes from 14 babies in 1981), it doesn't work.

SARS-CoV-2 infects whole rooms, which we are told means airborne, not droplet

Yet still droplet
Perhaps you enjoy information from 1974: https://twitter.com/jmcrookston/status/1337784934828806144
Perhaps you prefer information from close cousin to SARS-CoV-2, being SARS-CoV-1, for which we used airborne precautions. (from 2004 Mayo Clinic)
Perhaps we would like to play it safe given how many other pathogens are airborne.

Hint it's many more than just measles, chickenpox and TB, but most doctors have no clue. They are just repeating talking points. https://twitter.com/jmcrookston/status/1314688030171594752
Perhaps we'd like to rely on the fact that public health authorities said masks worked for SOURCE CONTROL in 2015 when they wanted nurses to vaccinate, but not 2020? https://twitter.com/jmcrookston/status/1315367987994558471
Yes, yes, surgical masks in hospitals, but WHO had said cloth masks for avian flu before.

Posted this in May:

https://twitter.com/jmcrookston/status/1257127608636116998

Anyway testing a mask is trivial - could nobody arrange that?

Then resign.
There goes Wales, getting on to ventilation etc. https://twitter.com/WelshGovernment/status/1338078761108070401?s=20
Side note that this is not new. >100 years of information about air spread. https://twitter.com/jmcrookston/status/1337784934828806144
Ooh, BC just took baby baby baby steps but still, better than raining droplets on my picnic.
You can follow @jmcrookston.
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