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Clearly we need to find ways to allow as many people as possible to work without killing them. There are some obvious things that people should do but a small subset claim it infringes on their "freedoms". Imagine people in Britain during WWII claiming blackout curtains infringe on their...

Ok then

This is a crisis. People need to treat it like one. Rain is right also that masks WILL provide protection even if it's not perfect. What is the big fricking deal? It's not going to be forever. Try to get the best masks you can, even KN-95s from China. The more things open up (and I get...

Not all doctors and hospitals everywhere are equally good. Another thing I should add is that my nephrology colleagues are seeing that "drying out" seriously and critically patients with strong diuretics and maximum tolerable doses of anti-clotting drugs like heparin (all given by infusion) are...

There are many different IV drips given for different reasons. There is not just one size fits all, certainly not!! Different IV drips are used to correct blood volume issues, or acid-base issues, or various electrolyte issues, and things of that nature, which are frequently encountered in...

To Mart: Yes, TT scares me much more. I summarized some reasons earlier, but the main reasons is anyone infected is going to lead to a concentration of virus that will stay in the air. Your partners may not know they are infected. You can't tell either. And remember, it is not just...

Often there are breezes on the beach. Maybe helps dilute viruses more? I am more worried about behavior Carl just mentioned inside cities. I see it too. One reason mask requirements are good is that it reinforces the idea that things arent yet normal. Also people are clueless about how this...

False negatives could come from swabbing the nose if someone doesn't have virus particles there ( as opposed to lower down). This would seem to me to be the most likely reason. This could also depend on how the swab is handled. RNA is notoriously easily degraded (or as we are taught RNase is...

When the same PCR test is repeated a large number of times in the same place it is not unusual to start to get false positives if someone is slightly careless. It depends a bit on assay design, instruments, and how much hand pipetting needs to be done, also how the lab is physically set up...

Coronaviruses have been shown to form aerosols and do not just sink to the ground. They have a very low Reynolds number so they mostly stay in the air and are buffeted around by any turbulence. Simply breathing expels virus. They primarily infect people through the upper repiratory tract...

Another point. Nearly every kid I ever saw who started fairly young and had lots of coaching made it to 2250 or even 2300. Quite a few. A few anti-talents stalled out at 2000. But only a few got past that. I think three reached 2550-2600. This is going back to around 1990. Areas with more...

The RT-PCR test quantifies the RNA that makes up the genome of the virus in a swab sample. BUT, it is an amplification procedure. First the RNA is converted into DNA and then the DNA is AMPLIFIED 2-fold each thermal cycle, 20+ cycles, hence super sensitive in theory. (multiply by 2 to the 20th...

Shouldnt it be ore?

One thing about usa ratings too is they are not linear really. Going from 2000 to 2200 is probably easier than 2400 to 2600.

Scary.

Even without complete lockdowns too many people chafe at the slightest measures that could reduce the impact of this, like being asked to wear face coverings. As for lockdowns, especially in densely populated areas you need to keep the rate of new infections at a level where it doesnt overwhelm...

I suspect errors in testing accounts for some of the reports of re-infection.

Also, unless our OP lives in Sao Paolo it is even more hopeless.

Good scientists too.

Which is fairly rarely accomplished by players in the Western hemisphere, although Brazil does better than most.