Health & Wellness

It's (almost certainly) airborne - 239 scientists

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It's (almost certainly) airborne - 239 scientists

We appeal to the medical community and to the relevant national and international bodies to recognize the potential for airborne spread of COVID-19. There is significant potential for inhalation exposure to viruses in microscopic respiratory droplets (microdroplets) at short to medium distances (up to several meters, or room scale), and we are advocating for the use of preventive measures to mitigate this route of airborne transmission.

Studies by the signatories and other scientists have demonstrated beyond any reasonable doubt that viruses are released during exhalation, talking, and coughing in microdroplets small enough to remain aloft in air and pose a risk of exposure at distances beyond 1 to 2 m from an infected individual (see e.g. [1-4]). For example, at typical indoor air velocities [5], a 5 μm droplet will travel tens of meters, much greater than the scale of a typical room, while settling from a height of 1.5 m to the floor. Several retrospective studies conducted after the SARS-CoV-1 epidemic demonstrated that airborne transmission was the most likely mechanism explaining the spatial pattern of infections e.g. [6]. Retrospective analysis has shown the same for SARS-CoV-2 [7-10].
https://academic.oup.com/cid/article/do ... 39/5867798

If you recall, the Hunan bus study in March 2020 was one of the first to show the ability of the virus to travel in a recirculated environment. Since then, the Korean call center and Chinese restaurant studies provide additional support of airborne transmission.

If you're in an enclosed space like a car or office with no fresh air, make sure you avoid it or wear a (K)N95.

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[OP]
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Here comes the pivot from the WHO. It's pretty clear this will end up like the masks debate.

W.H.O. to Review Evidence of Airborne Transmission of Coronavirus
We acknowledge that there is emerging evidence in this field, as in all other fields,” Dr. Allegranzi said. “And therefore, we believe that we have to be open to this evidence and understand its implications regarding the modes of transmission and also regarding the precautions that need to be taken.”

After hundreds of experts urged the World Health Organization to review mounting scientific research, the agency acknowledged on Tuesday that airborne transmission of the coronavirus may be a threat in indoor spaces.

W.H.O. expert committees are going over evidence on transmission of the virus and plan to release updated recommendations in a few days, agency scientists said in a news briefing.

The possibility of airborne transmission, especially in “crowded, closed, poorly ventilated settings, cannot be ruled out,” said Dr. Benedetta Allegranzi, who leads the W.H.O.’s committee on infection prevention and control.

She said the agency recommends “appropriate and optimal ventilation” of indoor environments, as well as physical distancing.
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I'm quite shocked that the national and international medical field has shown that their modus operandi has been to discredit all potential evidence regardless of health risk until it slaps them in the face... a few times.
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Fernando Poo
Wouldn't trust anything WHO has to say.
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Think of the Childre…
Why do we need WHO? Defund WHO already!

WOULD SOMEBODY THINK OF THE CHILDREN!!!
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hagbard wrote: Wouldn't trust anything WHO has to say.
This. They are simply the medical wing of the UN and as such are far more interested in the politics of health than the actual health of people. I'll never believe another word they say.
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This, is exactly the problem, too many people ignore what World Health said back in February. Those countries/people that did have COVID under control much sooner. Using this exact topic as example, World Health did mention aerosol transmission is possible way back in March and is referenced by the article.

The 239 scientists signed article from Oxford actually is for all Public Health bodies worldwide, not just to World Health but obviously WHO should take the leading role and it did. The argument didn’t say any wrong doing from any public health bodies but rather point out a sample logic – “the evidence is admittedly incomplete for all the steps in COVID-19 microdroplet transmission, but it is similarly incomplete for the large droplet and fomite modes of transmission.” And the preventive measures are practical and often can be easily implemented; many are not costly..

It is unfortunately that some media and people took a spin to the news (or any news) for political purpose.

FWIW the first time we realize airborne potential of SARS-CoV-2 was from China on Feb 8th: how-protect-yourself-novel-coronavirus- ... #p32129034

Tapout123 wrote: This. They are simply the medical wing of the UN and as such are far more interested in the politics of health than the actual health of people. I'll never believe another word they say.
People around you may have weaken immune system (or live with one). Wear a mask if possible, especially if you have cold symptoms.
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82 wrote: This, is exactly the problem, too many people ignore what World Health said back in February. Those countries/people that did have COVID under control much sooner. Using this exact topic as example, World Health did mention aerosol transmission is possible way back in March and is referenced by the article.

The 239 scientists signed article from Oxford actually is for all Public Health bodies worldwide, not just to World Health but obviously WHO should take the leading role and it did. The argument didn’t say any wrong doing from any public health bodies but rather point out a sample logic – “the evidence is admittedly incomplete for all the steps in COVID-19 microdroplet transmission, but it is similarly incomplete for the large droplet and fomite modes of transmission.” And the preventive measures are practical and often can be easily implemented; many are not costly..

It is unfortunately that some media and people took a spin to the news (or any news) for political purpose.

FWIW the first time we realize airborne potential of SARS-CoV-2 was from China on Feb 8th: how-protect-yourself-novel-coronavirus- ... #p32129034
WHO has been playing footsy with the CCP from the beginning. They started off by denying person to person transmission, then they dragged their feet and then fought against countries locking down their borders to China calling it racist. Ended with them saying countries should lock down. Forget WHO forget the UN. Total Marxist organization.
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Facts: SARS-CoV-2 genetic sequence, asymptomatic transmission, use masks and potential of aerosol transmission were all first reported by China scientists and authorities. I can agree World Health did not follow China's suggestion. China's problem happened between mid December and mid January when local authority downplayed the outbreak and failed to confirm human-to-human transmission, they admitted the mistake relatively quick and turned things around by middle of February. Yet look at where we are right now in middle of July.
hagbard wrote: WHO has been playing footsy with the CCP from the beginning. They started off by denying person to person transmission, then they dragged their feet and then fought against countries locking down their borders to China calling it racist. Ended with them saying countries should lock down. Forget WHO forget the UN. Total Marxist organization.
People around you may have weaken immune system (or live with one). Wear a mask if possible, especially if you have cold symptoms.
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Jan 21, 2007
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Now Gyms have reopened, what are the likelihood?
Is it safe to workout in the gym now?
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leahdizon wrote: Now Gyms have reopened, what are the likelihood?
Is it safe to workout in the gym now?
Unless you have mandatory masks indoors and requirement to get in and you sport on goggles and or n95... it isn't.
The social distancing thing doesn't exist even though there's signs everywhere.
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Your question is off-topic but here is my take.


I think gym is high risk. It may be acceptable if all of the following conditions are met but I strongly recommend outdoor exercise instead.
  • social distance, 2 meters or more
  • good ventilation within the premise
  • people with any symptoms are not allowed
  • no shared shower, sauna
  • very low number of new cases report in the area
  • equipment is sanitized after each use
Wear mask is not recommended during exercise, you need more oxygen.

A recent study of gym and COVID-19 from Norway. The study is inconclusive in my opinion because there was no positive case in the both groups (the only positive case is in training group but the person did not use the gym), which suggests a very low IFR to begin with. And most importantly, It didn't address the big question of what if one gym user is infected. Regardless, some key points from the study:
https://montanaathleticclub.com/wp-cont ... rticle.pdf
The subjects were required to follow hygiene rules and stay two meters from others during highintensity training. They weren’t allowed to use the showers at the gyms. No masks were required

“You should be very strict with the measures like distance and hygiene; in Norway, people
complied with the measures rigorously,” Mr. Bretthauer said.

Exercising indoors is riskier than outdoors, but if distancing and hygiene rules are observed,
gyms are safe to use, said Professor Andreas Dotzauer, a virologist with the University of Bremen
in Germany.

In Austria, where similar rules are in place, authorities haven’t registered any spread of the virus
in fitness centers, according to a government spokesman.
leahdizon wrote: Now Gyms have reopened, what are the likelihood?
Is it safe to workout in the gym now?
People around you may have weaken immune system (or live with one). Wear a mask if possible, especially if you have cold symptoms.

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