How SARS-CoV-2 spreads: new science

[NedX]

A recent study in a Korean medical journal demonstrates evidence of long-distance spread of SARS-CoV-2 because of airflow in interiors, using tracking data from a restaurant where diners who were farther from six feet all became infected.

You can find a synopsis of the study here, as well as a link to the original.

I'm posting this now because the interactive graphic in the middle of this article, which sums up the study, shows how airflow affects droplets of the virus that float in the air.

[S/V Illusion]

What’s your point in posting this? There is nothing new here in a study dated 6 months ago. The revelation stated in your link is stating the obvious:
“Droplet transmission can occur at a distance greater than 2 m if there is direct air flow from an infected”

[MrChris]

The point for me is that it means that it is not safe for anyone to be in any enclosed space, regardless of recommendations. The new strain is vaguely described as consider ably more infectious, does this mean airborne transmission???

Originally Posted by S/V Illusion

What’s your point in posting this? There is nothing new here in a study dated 6 months ago. The revelation stated in your link is stating the obvious:
“Droplet transmission can occur at a distance greater than 2 m if there is direct air flow from an infected”

[S/V Illusion]

Originally Posted by MrChris

The point for me is that it means that it is not safe for anyone to be in any enclosed space, regardless of recommendations. The new strain is vaguely described as consider ably more infectious, does this mean airborne transmission???

Of course that is what it means - this pathogen has always been known to be transported in ambient air. Go out. Don’t go out. Your choice but don’t rely on a 6month old certainty about a pathogen about which the knowledge base has been known for just10 months.

We don’t need a study to tell anyone A/C systems don’t filter virus size pathogens.

[NedX]

Originally Posted by S/V Illusion

Of course that is what it means - this pathogen has always been known to be transported in ambient air. Go out. Don’t go out. Your choice but don’t rely on a 6month old certainty about a pathogen about which the knowledge base has been known for just10 months.

We don’t need a study to tell anyone A/C systems don’t filter virus size pathogens.

I run into people every day who are still protecting themselves by disinfecting surfaces and keeping six feet. Re: "Always known" health agencies did not publicly acknowledge aerosolized transmission until September.

If all this is old news to you, then good. And if you know no one who doesn't realize this, e.g. no one who is still going to bars and restaurants, then you are blessed.

Anyway, my point in posting it was to show the picture. You can give the thread 0 stars.

Health and best wishes for the holiday.

[NedX]

Originally Posted by S/V Illusion

Of course that is what it means - this pathogen has always been known to be transported in ambient air. Go out. Don’t go out. Your choice but don’t rely on a 6month old certainty about a pathogen about which the knowledge base has been known for just10 months.

We don’t need a study to tell anyone A/C systems don’t filter virus size pathogens.

Also, the study was published in late November in Korea. It's the case they analyze that happened in June. The time a person was in the same room and the amount or lack thereof of contact necessary to become infected allowed them to work back to understand how the airflow affected the travel of the virus.

This is what is new.

[JPA Cate]

What I think it means is that prudent people who need hospitals should seek out the ones that have no Covid19 patients, if they require surgery. I would imagine the virus would merrily circulate (via the air conditioning) everywhere the air con goes.., and therefore, we need to nominate Covid 19 only hospitals for the duration. Kind of hard for smaller communities.

[Franziska]

Hi,

a reputable German newspaper "Die Zeit" has an interesting article with a kind of risk calculator which some may find helpful.

I think it's a good rough guideline for gatherings as far a they are legally allowed.

It's in German, but, if you speak few words or use Google translator it's easy to use.

https://www.zeit.de/wissen/gesundhei...ot-innenraeume

Raumgröße = Roomsize
Dauer = Time you spent in the room
Personen = Number of persons in room

Weitere Einstellungen = Further settings

It's an approximation, but better than nothing.
In any case no contacts is definetly the safest option.

Stay safe & healthy, happy holidays, Franziska

[NedX]

Originally Posted by Franziska

Hi,

a reputable German newspaper "Die Zeit" has an interesting article with a kind of risk calculator which some may find helpful.

I think it's a good rough guideline for gatherings as far a they are legally allowed.

It's in German, but, if you speak few words or use Google translator it's easy to use.

https://www.zeit.de/wissen/gesundhei...ot-innenraeume

Raumgröße = Roomsize
Dauer = Time you spent in the room
Personen = Number of persons in room

Weitere Einstellungen = Further settings

It's an approximation, but better than nothing.
In any case no contacts is definetly the safest option.

Stay safe & healthy, happy holidays, Franziska

Vielen Dank! Das ist sehr hilfreich.

[oh wait, there's an English-only rule] Thank you, very helpful! And best holiday wishes to you, too!

[Franziska]

Your welcome!

[NedX]

Originally Posted by Franziska

Your welcome!

There is actually an English translation on the site. Very useful for those who passed their German exam 32 years ago.

https://www.zeit.de/wissen/gesundhei...spot-interiors

[docwood]

Mya be good info. for some. I just want to thank everyone for not going political on the subject. This forum is one place on the internet I have been able to go and enjoy reading discussions that do not go down the ugly road of politics...Come to think of it maybe that's why I charter late October and early November. Being on a boat away from news/media sources that time of year is wonderful..lol..Merry Christmas everyone

[SkipMark]

Originally Posted by NedX

There is actually an English translation on the site. Very useful for those who passed their German exam 32 years ago.

https://www.zeit.de/wissen/gesundhei...spot-interiors

Now THIS is a really useful outcome of this posting. Thank you, NedX! :-)

[Gaia]

Originally Posted by S/V Illusion

Of course that is what it means - this pathogen has always been known to be transported in ambient air. Go out. Don’t go out. Your choice but don’t rely on a 6month old certainty about a pathogen about which the knowledge base has been known for just10 months.

We don’t need a study to tell anyone A/C systems don’t filter virus size pathogens.

Correct, AC units do not filter virus sized pathogens or virus sized anything. Nor do masks. Nor do almost anything else. What they both do filter to some helpful extent is droplets of water from the very small to visible size, that might contain the incredibly tiny virions.

They might do a better job of it if the filter fibres were coated with a surfactant, like soap. The surfactant would immediately kill the virus as well as trapping it but that is off the topic.

Jim sv Gaia

[skipmac]

Originally Posted by Franziska

Your welcome!

You mean bitte!