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Kassem

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    Kassem @kassem CC BY-NC-SA 24/10/2021
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    The #COVID‐19 pandemic is a global indoor air crisis that should lead to change: A message commemorating 30 years of Indoor Air - Li - 2021 - Indoor Air - Wiley Online Library
    ▻https://onlinelibrary.wiley.com/doi/10.1111/ina.12928

    Article très riche, à lire de bout en bout.

    In 1969, the American author Michael Crichton wrote in his novel The Andromeda Strain about the effort to contain a deadly extraterrestial pathogen, “A crisis is the sum of intuition and blind spots, a blend of facts noted and facts ignored.” What are the blind spots and the facts ignored in the COVID-19 pandemic?

    […]

    The dominant view in public health toward fearful airborne transmission fails to account for the power of #dilution. Sufficient dilution of airborne infectious aerosols is the key to reducing inhalation transmission, both at close range and at room scale. Sufficient ventilation and filtration reduce infection to be as low as outdoors. A paradigm shift10 is needed toward a new ventilation standard accounting for managing infection risk. This goal should also apply to other respiratory viruses, such as influenza and the common cold.

    #sars-cov2 #aérosols #transmission_aéroportée

    Kassem @kassem CC BY-NC-SA
    • @simplicissimus
      Simplicissimus @simplicissimus 24/10/2021

      Here, mechanistic understanding plays a key role. Another Indoor Air editorial analyzed four major observations of virus spread in this pandemic 1) most infections occurred in close range; 2) most infections occurred indoors; 3) outdoor infection risk was low; and 4) long-range transmission occurred occasionally. These observations are basic. We can deduce the major transmission route with the help of mechanistic theories, that is, short-range inhalation predominates, with long-range inhalation occurring occasionally or conditionally. […]
      The phenomenon of low risk outdoors and high risk indoors deserves some explanation. This is probably the most important observation in this pandemic. There is a simple explanation: dilution.

      Simplicissimus @simplicissimus
    • @simplicissimus
      Simplicissimus @simplicissimus 24/10/2021

      Sinon,
      • sur The Andromeda Strain, Michael Crichton, 1969
      The Andromeda Strain - Wikipedia
      ▻https://en.wikipedia.org/wiki/The_Andromeda_Strain

      https://upload.wikimedia.org/wikipedia/en/b/bf/Big-andromedastrain.jpg

      The Andromeda Strain is a 1969 techno-thriller novel by Michael Crichton, his first novel under his own name and his sixth novel overall. It is written as a report documenting the efforts of a team of scientists investigating the outbreak of a deadly extraterrestrial microorganism in Arizona.

      • en français, La variété Andromède, 1969
      ▻https://fr.wikipedia.org/wiki/La_Variété_Andromède

      • l’adaptation au cinéma (1971), chroniquée en 2008 par @jeanno sur hyperbate
      ▻https://hyperbate.fr/dernier/?p=248

      • The Andromeda Evolution, un sequel de 2019, le 12/11/2019 (#comme_par_hasard !) présenté ici par le critique littéraire du Washington Post
      ▻https://www.youtube.com/watch?v=Lb0jv_vNbV0


      ▻https://en.wikipedia.org/wiki/The_Andromeda_Evolution
      https://upload.wikimedia.org/wikipedia/en/d/d6/The_Andromeda_Evolution.jpg

      • et traduit en français, La menace Andromède, 18/06/2020
      cette fois-ci pas (pas encore…) de notice WP…
      La menace Andromède - Michael Crichton - Babelio
      ▻https://www.babelio.com/livres/Crichton-La-menace-Andromede/1231241

      https://m.media-amazon.com/images/I/516H8nVAZ9L._SX195_.jpg

      En 1967, l’exposition à une bactérie d’origine extraterrestre – nommée Variété Andromède – décima presque entièrement une bourgade de l’Arizona. Pendant cinq jours, une équipe de scientifiques œuvra sans relâche pour endiguer l’épidémie qui menaçait de tout anéantir sur son passage…

      Cinq décennies plus tard, un drone détecte une anomalie au milieu de la jungle amazonienne. La Variété Andromède est de retour ! Et elle a muté…

      Réunis en urgence, scientifiques et militaires savent que le temps leur est compté. Le virus se propage et gagne du terrain.
      Jusqu’à bientôt menacer toute forme de vie sur Terre…

      Simplicissimus @simplicissimus
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thèmes

  • #aérosols
  • #COVID
  • #dilution
  • #sars-cov2
  • #transmission_aéroportée
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