I think that, in the face of an ongoing global health emergency and a pressing need to reopen safely, some form of health pass is a reasonable option to consider. But debate is a good thing, so here are some brief thoughts on various concerns I've heard about them... [thread]
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Why do B12 and folate deficiencies lead to HUGE red blood cells?
And, if the issue is DNA synthesis, why are red blood cells (which don't have DNA) the key cell line affected?
For answers, we'll have to go back a few billion years.
2/
RNA came first. Then, ~3-4 billion years ago, DNA emerged.
Among their differences:
🔹RNA contains uracil
🔹DNA contains thymine
But why does DNA contains thymine (T) instead of uracil (U)?
https://t.co/XlxT6cLLXg
3/
🔑Cytosine (C) can undergo spontaneous deamination to uracil (U).
In the RNA world, this meant that U could appear intensionally or unintentionally. This is clearly problematic. How can you repair RNA when you can't tell if something is an error?
https://t.co/bIZGviHBUc
4/
DNA's use of T instead of U means that spontaneous C → U deamination can be corrected without worry that an intentional U is being removed.
DNA requires greater stability than RNA so the transition to a thymine-based structure was beneficial.
https://t.co/bIZGviHBUc
5/
Let's return to megaloblastic anemia secondary to B12 or folate deficiency.
When either is severely deficient deoxythymidine monophosphate (dTMP*) production is hindered. With less dTMP, DNA synthesis is abnormal.
[*Note: thymine is the base in dTMP]
https://t.co/AnDUtKkbZh
Why do B12 and folate deficiencies lead to HUGE red blood cells?
And, if the issue is DNA synthesis, why are red blood cells (which don't have DNA) the key cell line affected?
For answers, we'll have to go back a few billion years.
2/
RNA came first. Then, ~3-4 billion years ago, DNA emerged.
Among their differences:
🔹RNA contains uracil
🔹DNA contains thymine
But why does DNA contains thymine (T) instead of uracil (U)?
https://t.co/XlxT6cLLXg
3/
🔑Cytosine (C) can undergo spontaneous deamination to uracil (U).
In the RNA world, this meant that U could appear intensionally or unintentionally. This is clearly problematic. How can you repair RNA when you can't tell if something is an error?
https://t.co/bIZGviHBUc
4/
DNA's use of T instead of U means that spontaneous C → U deamination can be corrected without worry that an intentional U is being removed.
DNA requires greater stability than RNA so the transition to a thymine-based structure was beneficial.
https://t.co/bIZGviHBUc
5/
Let's return to megaloblastic anemia secondary to B12 or folate deficiency.
When either is severely deficient deoxythymidine monophosphate (dTMP*) production is hindered. With less dTMP, DNA synthesis is abnormal.
[*Note: thymine is the base in dTMP]
https://t.co/AnDUtKkbZh
this simple, counter narrative fact keeps cropping up all over the world.
hospital and ICU utilization has been and remains low this year.
it's terribly curious that so few of these monitoring tools provide historical baselines.
getting them is like pulling teeth.
we might think of this as an oversight until you see stuff like this:
this woman was arrested for filming and sharing the fact that their are empty hospitals in the UK.
that's full blown soviet. what possible honest purpose does that
this is the action of a police state and a propaganda ministry, not a well intentioned government and a public heath agency.
"we cannot let people see the truth for fear they might base their actions on real facts" is not much of a mantra for just governance.
90% full ICU sounds scary until you realize that 90-100% full is normal in flu season.
staffed ICU beds are expensive to leave empty. it's like flying with 15% of the plane empty. hospitals don't do that.
and all US hospitals are mandated to be able to flex to 120% ICU.
the US is currently at historically low ICU utilization for this time of year.
61% is "you're all going to go out of business" territory as is 66% full hospital use.
can you blame them for mining CARES act money? they'll die without it.
hospital and ICU utilization has been and remains low this year.
it's terribly curious that so few of these monitoring tools provide historical baselines.
getting them is like pulling teeth.
It took a Freedom of Information request but @Covid19DataUK acquired 2017-2019 averages for England hospitalizations.
— Yinon Weiss (@yinonw) December 31, 2020
2020 had 18% fewer hospitalizations than prior years.
All around the world, using hospital data without context of prior years is just a fear generating lie. pic.twitter.com/DJDpqhIQuw
we might think of this as an oversight until you see stuff like this:
this woman was arrested for filming and sharing the fact that their are empty hospitals in the UK.
that's full blown soviet. what possible honest purpose does that
this is the action of a police state and a propaganda ministry, not a well intentioned government and a public heath agency.
"we cannot let people see the truth for fear they might base their actions on real facts" is not much of a mantra for just governance.
90% full ICU sounds scary until you realize that 90-100% full is normal in flu season.
staffed ICU beds are expensive to leave empty. it's like flying with 15% of the plane empty. hospitals don't do that.
and all US hospitals are mandated to be able to flex to 120% ICU.
the US is currently at historically low ICU utilization for this time of year.
61% is "you're all going to go out of business" territory as is 66% full hospital use.
can you blame them for mining CARES act money? they'll die without it.
I think @SamAdlerBell in his quest to be the contrarian on Fauci gets several things wrong here. 1/
First, the failure last year actually was driven by the White House, the #Trump inner circle. Watch what's happening now, the US' scientific and public health infrastructure is creaking back to life. 2/
I think Sam underestimates the decimation of many of our health agencies over the past four years and the establishment of ideological control over them during the pandemic. 3/
I also am puzzled why Tony gets the blame for not speaking up, etc. Robert Redfield, Brett Giroir, Deb Birx, Jerome Adams, Alex Azar all could have done the same. 4/
Several of these people Bob Redfield, Brett Giroir, Alex Azar were led by craven ambition, Jerome Adams by cowardice, but I do think Deb Birx and Tony tried as institutionalists, insiders to make a difference. 5/
— Matthew Yglesias (@mattyglesias) January 30, 2021
First, the failure last year actually was driven by the White House, the #Trump inner circle. Watch what's happening now, the US' scientific and public health infrastructure is creaking back to life. 2/
I think Sam underestimates the decimation of many of our health agencies over the past four years and the establishment of ideological control over them during the pandemic. 3/
I also am puzzled why Tony gets the blame for not speaking up, etc. Robert Redfield, Brett Giroir, Deb Birx, Jerome Adams, Alex Azar all could have done the same. 4/
Several of these people Bob Redfield, Brett Giroir, Alex Azar were led by craven ambition, Jerome Adams by cowardice, but I do think Deb Birx and Tony tried as institutionalists, insiders to make a difference. 5/