Gerrard Marangoni
601 posts
Gerrard Marangoni
@gmsprezman
Chemistry prof at StFX University. Co-founder of SONA Nanotech and GMS Surface Tech.
Antigonish NS Katılım Şubat 2011
193 Takip Edilen129 Takipçiler
Yesterday I successfully defended my PhD in Chemical Engineering! I’m now Dr. Brittany! 🤓 ⚙️🍓🥕🥬
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Gerrard Marangoni retweetledi
So much fun working with @Robert__Singer and @jasonmasuda on this project. And more to come!!!
Jason Masuda@jasonmasuda
News from @SMUChemistry: @Robert__Singer, @gmsprezman, and me along with hard working undergrads and Olivia Singer, Jacob Campbell, Jacob Hoare, recently published a paper in @ACS_Omega including a cover for the current issue! @ACS4Authors #MyACSCover pubs.acs.org/doi/10.1021/ac…
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I'm beyond honoured to announce that I was awarded a @NSERC_CRSNG Postdoctoral Fellowship to continue my research on developing novel proximity induced modalities in the lab of @DanNomura here at @UCB_Chemistry! So many people have helped me get to where I am today, and (1/2)
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@melschriver Hey Mel - we have a solution for that! GMS Whiteboard Cleaner. Specially formulated to clean whiteboards.
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TIL whiteboards need to cleaned with whiteboard cleaner.I know I have been using the 95% EtOH for the lab whiteboard without issues but something has gone desperately wrong with two of the white boards in my regular lecture room. I think I know why now.
C&EN (Chemical & Engineering News)@cenmag
Earlier this year, a professor in Florida Atlantic University’s Wilkes Honors College sent a group email complaining that the dry-erase boards in the classrooms weren’t being erased. Even worse, the boards couldn’t be erased. But why? fal.cn/3nRGq
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Gerrard Marangoni retweetledi
Gerrard Marangoni retweetledi
THREAD:
This is an important study - supports anecdotes and other work by @awyllie13
Virus growing and detectable in saliva days earlier than the nose!
Both PCR & Ag in nose lag saliva 1-3 days
In Nose, PCR is 1 day faster than Ag (As Expected)
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medrxiv.org/content/10.110…
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Gerrard Marangoni retweetledi
We have a @US_FDA that STILL will not recognize that people use tests for public health purposes.
We ONLY have a regulatory path based on medicine and NOT for public health. Why won’t FDA recognize that tests are used for Public Health in this Public Health emergency ?
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Gerrard Marangoni retweetledi
The frustrating thing is that this doesn’t need to be hard!
The science and biology of rapid Ag tests is extremely simple/straightforward if we allow their formal evaluation to be towards why we take the tests: answering “Am I infectious” or “Do I need to isolate still?”
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Gerrard Marangoni retweetledi
Confusion around rapid tests is becoming immensely harmful at local levels as every small town and city has their own decision makers trying to wade through a mix of confusing and often conflicting messages, with no guidance and no idea who or what to trust.
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Gerrard Marangoni retweetledi
Its finally dawning on me that there is an endless supply of ppl - many in public health & medicine - who will not understand science of testing & how to interpret the sea of (poorly performed) studies (including by CDC)
This is a failure of messaging by Federal government
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Gerrard Marangoni retweetledi
More generally why doesn’t FDA have a regulatory path for anything having to do w Public Health?
Has the pandemic not demonstrated how important Public Health tools are?
Why try to make them fit in an inappropriate Medical tool Box?
Public Health has distinct requirements!
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Gerrard Marangoni retweetledi
Rapid tests are exceptionally good at detecting ppl who are infectious and need to isolate - and not weeks after they’ve been infectious
Why do we still pretend like PCR is a gold standard when it is absolutely NOT specific to what most people besides doctors care about?
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Gerrard Marangoni retweetledi
Love this.
For people who say rapid tests can't be quantitative and swabs too variable to think of as a quantifiable sample... Here is one great example of just how reliable tests and viral load trajectories can be.
This is just cool too.
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Gerrard Marangoni retweetledi
@_kayacihan @gayle when a rapid antigen test turns positive, it means there is active replicating virus. When it turns positive quickly and bright, then the amount of virus is very very high still. Yes, should ALWAYS be considered infectious at this stage.
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Gerrard Marangoni retweetledi
This is how we should be thinking of isolation now
*2 days of testing negative ends isolation early*
(actually I published this argument in April 2020… said 2 days of PCR Ct values above 35 should end isolation - many physicians wanted to crucify me for it)
Ashish K. Jha@ashishkjha
5 days and 1-2 neg antigen tests should be enough to end isolation Not just for healthcare workers But for moms and dads getting back to kids Hourly workers who don’t get paid when home Really for anyone who doesn’t want to be isolating when they don’t need to be End
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Gerrard Marangoni retweetledi
Honestly... I'm just not sure how to feel about this at this point.
Demoralized. Frustrated. Understanding.
Can't reverse time though... so the only thing I can feel now is that, conditioned on where we are, this is a positive move for public health.
World News Tonight@ABCWorldNews
EXCLUSIVE: Pres. Biden told @DavidMuir he does not consider difficulty in finding tests a failure, but concedes: “I wish I had thought about ordering a half a billion...two months ago.” abcn.ws/3ppeE6I
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Gerrard Marangoni retweetledi
Rapid Molecular can stay positive for a bit longer and PCR can stay positive for literally weeks longer.
But Rapid Antigen is direct evidence of having quite a lot of virus which can really only persist if virus is currently continuing to replicate efficiently.
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Gerrard Marangoni retweetledi
Important:
If I am still positive on a Rapid Test after 10 days, should I still isolate?
YES!!
MOST people are infectious for less than 10 days, but SOME can remain for longer
Assume that if positive on Rapid ANTIGEN, you're still infectious (Not same for rapid molecular/PCR)
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