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SARS-CoV-2 Coronavirus (COVID-19)

Discussion in 'Environmental Discussion' started by tochatihu, Jan 26, 2020.

  1. Moving Right Along

    Moving Right Along Senior Member

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    I don’t think we have to worry about a 1918-like pandemic at this point. For the US, we’re going to end up somewhere between 1957 and 1918 in terms of deaths. That still leaves a lot of room, because (by population percentage) 10x more people were killed in the 1918 flu than were killed in the 1957 flu. Worldwide, it looks like we’re on target for somewhere between 1968 and 1957 in terms of worldwide death percentage. 2 million deaths worldwide would scale with the 1968 flu and 3 million would scale from the 1957 flu. Unlike the deadly 1018 flu, covid gives every indication of causing the most deaths on its first wave, and case fatality rates are going down in most places.

    Since worldwide infection rates have continued to rise, we’re not yet at the halfway point of this pandemic. But there is good news for hard hit countries, and it seems unlikely that we will see anything like the 1918 flu as a result of covid.
     
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  2. tochatihu

    tochatihu Senior Member

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    Comparing to 1918 and 1957 as well makes sense. In 1918, medicine was very different than today. 1957 had mechanical ventilators (thanks, polio) but genetics was still a black box. Genetics now is nothing less than amazing.

    I doubt that any new disease can take as many as in the bad old days. But they will still keep coming.

    Meanwhile, TB, malaria, and a bunch of intestinal bugs still have not met their 'match' from genomics.
     
  3. bisco

    bisco cookie crumbler

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    bad day in ma :unsure:
     
  4. mjoo

    mjoo Senior Member

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    Vitamin D levels peaked in northern hemisphere in September. It's downhill from here.
     
  5. bisco

    bisco cookie crumbler

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    fda approves remdesivir despite who saying it is ineffective
     
  6. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Ok.

    Bob Wilson
     
    #2866 bwilson4web, Oct 22, 2020
    Last edited: Oct 22, 2020
  7. Salamander_King

    Salamander_King Senior Member

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    #2867 Salamander_King, Oct 23, 2020
    Last edited: Oct 23, 2020
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  8. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Source: Pinpointing the 'silent' mutations that gave the coronavirus an evolutionary edge: RNA folding may help explain how the coronavirus became so hard to stop after it spilled over from wildlife to humans -- ScienceDaily

    Now, researchers at Duke University have identified a number of "silent" mutations in the roughly 30,000 letters of the virus's genetic code that helped it thrive once it made the leap -- and possibly helped set the stage for the global pandemic. The subtle changes involved how the virus folded its RNA molecules within human cells.

    For the study, published Oct. 16 in the journal PeerJ, the researchers used statistical methods they developed to identify adaptive changes that arose in the SARS-CoV-2 genome in humans, but not in closely related coronaviruses found in bats and pangolins.
    ...
    The new study likewise flagged mutations that altered the spike proteins, suggesting that viral strains carrying these mutations were more likely to thrive. But with their approach, study authors Berrio, Wray and Duke Ph.D. student Valerie Gartner also identified additional culprits that previous studies failed to detect.

    The researchers report that so-called silent mutations in two other regions of the SARS-CoV-2 genome, dubbed Nsp4 and Nsp16, appear to have given the virus a biological edge over previous strains without altering the proteins they encode.
    ...

    This critter is a moving target so last years herd is this years feast. But as we gain insights, it can be held at bay with good hygiene: (1) masks and (2) distance.

    Bob Wilson
     
  9. tochatihu

    tochatihu Senior Member

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  10. Merkey

    Merkey Active Member

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  11. bisco

    bisco cookie crumbler

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    just please keep a hospital bed open for me
     
  12. fuzzy1

    fuzzy1 Senior Member

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    Then don't go to Salt Lake City, or Coeur d'Alene.
     
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  13. bisco

    bisco cookie crumbler

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    don't you worry, i'm staying right here in the land of (semi) sanity. we do have our trumpers
     
  14. tochatihu

    tochatihu Senior Member

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    Spoiler alert - don't scroll down through this post about

    https://www.nature.com/articles/s41591-020-1132-9
















    "we assessed scenarios of social distancing mandates and levels of mask use. Projections of current non-pharmaceutical intervention strategies by state—with social distancing mandates reinstated when a threshold of 8 deaths per million population is exceeded (reference scenario)—suggest that, cumulatively, 511,373 (469,578–578,347) lives could be lost to COVID-19 across the United States by 28 February 2021. We find that achieving universal mask use (95% mask use in public) could be sufficient to ameliorate the worst effects of epidemic resurgences in many states. Universal mask use could save an additional 129,574 (85,284–170,867) lives from September 22, 2020 through the end of February 2021, or an additional 95,814 (60,731–133,077) lives assuming a lesser adoption of mask wearing (85%), when compared to the reference scenario."

    Now that you've scrolled, They model that total US dead could be reduced by 129k with total masking, or 96k by pretty much masking. Sounds good, but 511k totally does not.

    I am not done looking for better (and better news about) therapeutics, because spooling up vaccines (when they come) will take time.
     
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  15. GreenJuice

    GreenJuice Active Member

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    There is additional modelling data in support of this. This one from the Royal Society in the UK from a few months back.

    upload_2020-10-25_18-16-49.gif

    Third graph on the second row shows that everyone using a covering that is only 75% effective can drop the R-value from 4 to below 1; thus achieving the same as, but without the need, for a wider lockdown!

    Paper from the Royal Society here: https://royalsocietypublishing.org/doi/10.1098/rspa.2020.0376
     
  16. ILuvMyPriusToo

    ILuvMyPriusToo Senior Member

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    Yes, we could do this if only we would do this . . .
     
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  17. bisco

    bisco cookie crumbler

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    it ain't that hard, i don't know what peoples problem is. but then again, i don't drive a pick up truck and carry an ak-47. so who am i to know?
     
  18. hill

    hill High Fiber Member

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    How do the amount of testings relate to deaths / cases
    .
     
  19. Moving Right Along

    Moving Right Along Senior Member

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    According to current estimates compiled by the CDC, the greatest likelihood is we will hit 250,000 deaths 2-3 weeks after November 9. If we keep roughly the same track over the winter, that puts the death total on or around 350,000 by mid March, which still isn’t good, but it’s a whole lot less than the 500,000+ suggested by the estimate a few posts above.

    COVID-19 Forecasts: Deaths | CDC