yup
Printable View
60 C is not really a high temperature. High enough to kill some corona viruses, but most say 70 C for this one. That's not really "almost boiling" to my mind, but I guess if it's hotter than your coffee then those 10 degrees may seem significant. 70 C dry air has been shown to be effective at disinfecting masks.
https://www.nytimes.com/2020/04/16/h...ronavirus.html
ETA: 60 C = 140 F, 70 C = 158 F
How does that matter? The virus can't be inside the steak only on the outside, which does get cooked much hotter than 212
I'll rather succumb to rat flu than grill my steaks well done.
"Give me medium-rare, or give me death." -Patrick Henry... probably
Sent from my Pixel 3 using TGR Forums mobile app
One of the important features of masks is that they help keep your sinuses from drying out, which would make you more susceptible to all kinds of crap. Drying out is why airplanes have some of the cleanest air (exchanged 20-30 times per hour according to Alaska, plus HEPA filters) and yet air travel seems to spread disease anyway (minimal humidity in planes). Wearing anything over your mouth and nose helps with that. AC vents have a similar effect...
A week ago or so I read an article that seemed to suggest ingesting cv-19 on food was not a big deal, as the stomach killed the virus. It was inhaling or wiping the virus in your eyes or nose that were bad news. Just the messenger and what do I know?
Does not specify how long after they swabbed the ventilation system, nor if the exhaust was to outside vs recirc or what the recirc percentage was, nor the fresh vs total ach. There is no indication if the closest exhaust had a return to a central unit that would have put recirced PM back out through the farther ac vents. Therefor you cannot estimate particulate matter residence time or mixing. They do indicate that the general airflow map didn't promote mixing between the area where people were infected vs where people didn't get infected.
Any aerosols in the ventilation system would not be expected to fall out nor would any virus be expected to be alive after 2 days on ducts (or 1 day on filters) much less whenever these investigators showed up to swab the vents. It is unsurprising their 6 swabs showed nothing. There were not major aerosolizing events known to have occurred (patient was not symptomatic). They documented 2 interfamily transmissions to have taken place in the restaurant (and speculated it could have been up to 5, but could also have been intrafamily transmissions).
That study does absolutely nothing to show that airborne (or fomite) transmission doesn't happen in asymptomatic/presymptomatic patients.
They confirmed what is thought, that the PRIMARY mechanism of transmission is extended exposure via droplets.
That is certainly the prevailing theory. I still don’t understand the part where if it’s on your hands and you touch your eyes nose mouth, bad. But if it’s on food, you can put it in your mouth and no problem.
That said, I suppose dork is right that most food is externally hotter than the normal 140 for internal cooking doneness. Still gross to think about since we know it’s all over the meat packing plants. That aside, I’m still not believing the notion that it will die on produce, and that touching your mouth with it is no biggie.
Doctors were once thoroughly convinced that stomach acid killed bacteria, too. Turns out a lot of ulcers are caused by bacterial infection. How you gonna get food to your stomach and not leave any traces in your breathing holes, anyway? I think you got that bit from a fake source the Russians have been pushing.
Still, most prepared food is hot, so most is probably safe. But I'm not buying salads or cold subs right now.
The mask offers some protection to the wearer IF the mask is effective at filtering incoming particles AND the mask doesn't allow infectious particles to soak through a damp mask to the interior side where they get on the lips/face/etc.
Eyes are a potential entry point, but far less likely vs air forcibly inhaled into the respiratory tract.
No. Would be better with eye protection, but since viral load matters you're better off stopping as much as possible. Further, breathing dry air dries your nose and throat, and you keep breathing through there. The amount of air that passes right next to your tissue in your nose and throat is probably 100x higher than what passes close by your eyes--more in still air? But sure, throw on some sunglasses.
Agreed and they say as much in the study "Virus transmission in this outbreak cannot be explained by droplet transmission alone." There's another study looking at 3,300 known infections and none of the people were infected outdoors.
WRT "It is unsurprising their 6 swabs showed nothing," there's more and more evidence indicating time (like radiation, virus viability has a half-life) and dose is significant in terms of severity which seems to be why health care workers can be so badly affected.
Regardless, it wouldn't make sense to say the virus can't be transmitted via aerosolized droplets or fomites or outdoors but if the goal is to bring R-naught < 1, or just protect ourselves, focusing on the most significant modes of transmission is a good first best baseline.
I agree with respect to limiting transmission outside of healthcare environments the focus should be on droplet spread which we've known to be the primary mode since very early on.
I absolutely believe it can be transmitted via aerosol and probably via fomite, but it is most likely uncommon outside of healthcare environments or very extended exposure scenarios.
This study is a good read from UNMC Can you link the 3300 study?