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Abstract
We aerosolized severe acute respiratory syndrome coronavirus 2 and determined that its dynamic aerosol efficiency surpassed those of severe acute respiratory syndrome coronavirus and Middle East respiratory syndrome. Although we performed experiment only once across several laboratories, our findings suggest retained infectivity and virion integrity for up to 16 hours in respirable-sized aerosols.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is a readily transmissible zoonotic pathogen and the etiologic agent of the coronavirus disease (COVID-19) pandemic (1). To determine aerosol stability of the virus, we measured the dynamic (short-term) aerosol efficiencies of SARS-CoV-2 and compared its efficiency with SARS-CoV and Middle East respiratory syndrome coronavirus (MERS-CoV).
Conclusions
The comparison of short-term aerosol efficiencies of 3 coronaviruses showed SARS-CoV-2 approximates or exceeds the efficiency estimates of SARS-CoV and MERS-CoV. Some efficiency determinations for SARS-CoV-2 ranged to −5.5log10 (Figure 1), a full log difference from MERS-CoV. The higher efficiencies across independent laboratories strengthens this observation. These data suggest that SARS-CoV-2 generally maintains infectivity at a respirable particle size over short distances, in contrast to either betacoronavirus. Aerosol suspension results suggest that SARS-CoV-2 persists longer than would be expected when generated as this size particle (2-µm mass median aerodynamic diameter). This finding is notable because decay and loss in the infectious fraction of airborne virus would be expected on the basis of prior susceptibility studies with other environmentally hardy viruses, such as monkeypox virus (5). A recent study (6) showing only a slight reduction of infectivity in aerosol suspensions with approximately similar particle sizes also suggested minimal effects on SARS-CoV-2 airborne degradation.
originally posted by: tanstaafl
It can concentrate both. It does not stop it.No one said otherwise.
originally posted by: peck420
originally posted by: tanstaafl
It can concentrate both. It does not stop it.No one said otherwise.
You have claimed many times masks don't work, now you are claiming they absolutely do.
If the masks contain CO2, they contain Covid hundreds of times better.
Anyone who has read the papers discussing the PRRA insert and the furin cleavage site not found in any other coronavirus should already be skeptical of natural evolution. This is especially true when the virus happens to appear next to a virology lab who just happens to be doing gain of function research on coronaviruses. The virus also binds tighter to human receptors than any other animal it effects which shouldn't be the case if the virus jumped from a host animal into humans. SARS-CoV-2 should bind tighter in whatever intermediate host spread the virus than in humans but if the virus was manipulated in a lab due to GoF research it would completely explain this aspect. As far as I am concerned a lab leak should be assumed and the burden of proof to prove it is natural is on those claiming it is natural. Not to mention there have been multiple recorded leaks of SARS from Chinese virology labs in the past. There is tons of circumstantial evidence pointing towards a lab leak and no virologist is able to make a solid argument about how it naturally evolved; all they say is that it originated in bats, jumped to an intermediate host and jumped to humans. Other than making that basic claim there is no actual proof to support it as no intermediate host has been identified.
originally posted by: tanstaafl
originally posted by: McGinty
a reply to: hopenotfeariswhatweneed
You can see that pattern in every nation that’s allowed the virus to get out of control;
What is hilarious is people like you who actually think there is anything we can do about it.
It is here. Now we just need to grit our teeth and see it through.
As someone else pointed out, all 'flattening the curve' does is stretch things out much more than they need to, and results in more deaths from the lockdowns than we'd have from the virus.
Just stfu and let it run its course.
originally posted by: doorhandle
Thanks MB2, the act of having to, by law, to wear a face covering when shopping is a huge shift for me to comprehend. I understand the necessity of course, scary/worrisome to think this is the new normal now for possibly years to come.
originally posted by: carewemust
What does this tell you?
More at: www.zerohedge.com...
The World Health Organisation announced Monday that it will not be visiting the Wuhan Institute of Virology during its investigation into the origins of the coronavirus, despite the fact that the lab held samples of coronavirus that were almost exactly the same as that which caused a global pandemic.
originally posted by: Rich Z
I prefer waiting out all the doctor's going through the "let's try this to see if it helps" phase of this infection. When we get to the stage where doctors know nearly everything they are going to get to know about it, and there are several tried and true methods of pulling severe patients through, THEN i won't be as reluctant as I am now to take unnecessary (and in my opinion, foolhardy) risks of catching this virus.
originally posted by: anonentity
a reply to: Rich Z
But you have to realize that the majority of the people walk around with smeared fecal matter all around their nether regions. The supposedly most advanced country on Earth, never understood that medieval hygiene habits aid medieval diseases.