I am very confused by this. South Korean doctors have been talking about this since at least March. I thought it was just common knowledge.WHO exhibited their usual shocking attitude about this issue, right up until they were publicly criticised by many.
Coronavirus: WHO rethinking how Covid-19 spreads in air
The WHO has acknowledged there is evidence that Covid-19 can be spread by airborne particles.www.bbc.co.uk
I am very confused by this. South Korean doctors have been talking about this since at least March. I thought it was just common knowledge.
it doesn't need to kill himEven the very liberal gf (who tells me off for mentioning lampposts and tories etc.) says she hopes Bolsanaro ‘fucking dies’. I wish I had more faith in poetic justice. Covid is shit at killing cunts.
I am very confused by this. South Korean doctors have been talking about this since at least March. I thought it was just common knowledge.
i thought it was obvious after the way so many people caught it from others at parties where they'd been chattingIts the merry-go-round of wilful ingorance and dogma in the orthodoxy, that I went slightly mad ranting about some months back.
There is a bias against accepting inconvenient truths.
WHO exhibited their usual shocking attitude about this issue, right up until they were publicly criticised by many.
Coronavirus: WHO rethinking how Covid-19 spreads in air
The WHO has acknowledged there is evidence that Covid-19 can be spread by airborne particles.www.bbc.co.uk
Its the merry-go-round of wilful ingorance and dogma in the orthodoxy, that I went slightly mad ranting about some months back.
There is a bias against accepting inconvenient truths.
But the infection prevention and control committee in particular, experts said, is bound by a rigid and overly medicalized view of scientific evidence, is slow and risk-averse in updating its guidance and allows a few conservative voices to shout down dissent.
“They’ll die defending their view,” said one longstanding W.H.O. consultant, who did not wish to be identified because of her continuing work for the organization.
more like we'll die because of their views“They’ll die defending their view,” said one longstanding W.H.O. consultant
This is why I'm confused. I had complacently assumed that public policy was being driven by a consideration of this means of transmission for months already.Yep. They seem to have wanted to bury their collective heads in the sand. Looks like they felt that acknowledging this would mean massive overhauls in how the virus is dealt with and how much PPE people will need.
It's looking like all indoor spaces will need to be very well ventilated and people working indoors will require masks. Also all health personel should be wearing N95 masks regardless of their role.
And there will be greater requirements to sanitize areas where people gather or meet. Even spraying the air.
Thinking back to China after the initial stages...they were very comprehensively spraying and sanitising indoor and outdoor spaces. Taking no chances. And then seeing drs and nurses here told initially not to wear masks???
No fucking wonder 1/3 of covid 19 cases here in Ireland were amongst medical / health care staff.
This is why I'm confused. I had complacently assumed that public policy was being driven by a consideration of this means of transmission for months already.
The head of covid control in SK described how it happens with reference to the mass infection at the Christian rally - it is transmitted as an aerosol that spreads around an enclosed area and slowly builds up over time to potentially infectious levels. In an open area, that aerosol is quickly dispersed. From his description, it takes time to build up, and the more crowded and more enclosed the space, the more likely it is to happen. Hence, probably, so many bus drivers getting it here pre-lockdown, and also, probably, rush-hour trains being a major, perhaps the major, means of transmission in all the big cities that suffered big outbreaks.
Respiratory infections can be transmitted through droplets of different sizes: when the droplet particles are >5-10 μm in diameter they are referred to as respiratory droplets, and when then are <5μm in diameter, they are referred to as droplet nuclei.1 According to current evidence, COVID-19 virus is primarily transmitted between people through respiratory droplets and contact routes.2-7 In an analysis of 75,465 COVID-19 cases in China, airborne transmission was not reported
Airborne transmission is different from droplet transmission as it refers to the presence of microbes within droplet nuclei, which are generally considered to be particles <5μm in diameter, can remain in the air for long periods of time and be transmitted to others over distances greater than 1 m.
This is why I'm confused. I had complacently assumed that public policy was being driven by a consideration of this means of transmission for months already.
The head of covid control in SK described how it happens with reference to the mass infection at the Christian rally - it is transmitted as an aerosol that spreads around an enclosed area and slowly builds up over time to potentially infectious levels. In an open area, that aerosol is quickly dispersed. From his description, it takes time to build up, and the more crowded and more enclosed the space, the more likely it is to happen. Hence, probably, so many bus drivers getting it here pre-lockdown, and also, probably, rush-hour trains being a major, perhaps the major, means of transmission in all the big cities that suffered big outbreaks.
Why the fuck would anyone ever assume that it wasn't transmitted by droplet? Every other cold virus is.
Quite. The WHO haven't really covered themselves in glory on this.Droplet transmission has always been accepted. It’s airborne/aerosol that wasn’t... though, as elbows pointed out, the distinction has become political rather than scientific to an extent.
An aerosol is a suspension of very fine droplets where electrostatic and thermal/kinetic turbulent effects dominate over largely ballistic gravitational ones (in a 'spray' of larger sneezed droplets, say, or a cough). The dynamics of each process and resulting 'output' are significantly different and thus so are their capacity to distribute virions (this was highlighted months ago eg here).Quite. The WHO haven't really covered themselves in glory on this.
An aerosol is a small droplet after all.
An aerosol is a suspension of very fine droplets where electrostatic and thermal/kinetic turbulent effects dominate over largely ballistic gravitational ones (in a 'spray' of larger sneezed droplets, say, or a cough). The dynamics of each process and resulting 'output' are significantly different and thus so are their capacity to distribute virions (this was highlighted months ago eg here).
Though, on second thoughts, I should have really written "propensity to distribute virions, for a given set of circumstances" instead of simply just "capacity to distribute virions".liked because you said - much more clearly - what I was about to type
Though, on second thoughts, I should have really written "propensity to distribute virions, for a given set of circumstances" instead of simply just "capacity to distribute virions".
Not lighter as such. (Prolonged) suspension is down to thermal and electrostatic effects dominating (because droplet dimensions are so small).I was going to say aerosols are lighter so float rather than drop. Think you have the science covered
Please add eating I'm sure that's pretty riskyI wonder if outlawing talking, singing and shouting on public transport would have more benefit than making masks compulsory.