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The biology of coronavirus COVID-19 - including research and treatments

Discussion in 'Epidemics (including Covid-19, not Long Covid)' started by Trish, Mar 12, 2020.

  1. Leila

    Leila Senior Member (Voting Rights)

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    Why?

    Isn't it risk group and frontline health care workers first?
     
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  2. JemPD

    JemPD Senior Member (Voting Rights)

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    when/where did he say that?
     
  3. Trish

    Trish Moderator Staff Member

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    Sean, merylg, Michelle and 4 others like this.
  4. Jonathan Edwards

    Jonathan Edwards Senior Member (Voting Rights)

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    It looks to me as if the author has lost it in terms of understanding of what vaccines do. Vaccines have no ability to stop you getting infected. That happens when you breath in or swallow a virus. The point of the vaccine is to stop the virus then producing symptoms and signs - i.e. being ill - by preventing the virus from replicating. Which is the same as 'preventing people getting disease'. He seems to be just muddling up words to make some clever point.

    There seems to something a bit preachy about this doctor - his autobiography is entitled something like 'My lifelong fight against illness'. Sure we all did that, but don't necessarily want to bore people with it.
     
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  5. Mij

    Mij Senior Member (Voting Rights)

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    @Jonathan Edwards

    So wearing a mask is much better at preventing us from contracting the virus in the first place. Not as practical as getting a vaccine, but something I would prefer.
     
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  6. Trish

    Trish Moderator Staff Member

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    That relies on others to wear masks and continued social distancing. I will gladly take any vaccine offered me that has been through testing and approval. I'd prefer to take the risk with that than be permanently isolated.
     
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  7. Jonathan Edwards

    Jonathan Edwards Senior Member (Voting Rights)

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    A mask is better at stopping the virus getting in to one particular person who has met virus but that does not mean that a mask is better than a vaccine. It does a different job. In the long run a vaccine is likely to be much better at stopping most people getting infected because masks are not that good at stopping virus getting in every time. If a mask stops the virus on Monday and Tuesday it may still not stop the virus on Wednesday. And for the next person the same applies and so the virus spreads.

    Or put another way, vaccines stop other people getting infected after any one person has been infected. And everyone who is infected is an other person in relation to someone infected. So for a population vaccines are better at stopping infection than masks.
     
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  8. rvallee

    rvallee Senior Member (Voting Rights)

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    Medium-term effects of SARS-CoV-2 infection on multiple vital organs, exercise capacity, cognition, quality of life and mental health, post-hospital discharge

    https://www.medrxiv.org/content/10.1101/2020.10.15.20205054v1

    The 6-minute walking test is rather high in this cohort. Although it's a low-intensity test so it has a very low ceiling. Looking at the SF-36, there is a wide range of functioning, from 45 to 90.

    There doesn't appear to have been any questions about neurological or autonomic symptoms. Very unfortunate that people miss out on things just because they don't know what questions to ask.
     
  9. Mij

    Mij Senior Member (Voting Rights)

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    How does everyone feel about making this vaccine mandatory? Or can they?
     
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  10. Leila

    Leila Senior Member (Voting Rights)

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    I don't feel compfortable with a fast track vaccine.

    I'm not anti vaxx but I don't know what it - or any vaccine - might be doing to my immune system.

    I haven't had any ever since coming down with ME.

    I'm not sure vaccinating can be made mandatory directly. But indirectly maybe by denying/granting access to certain institutions/jobs etc.
     
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  11. Mij

    Mij Senior Member (Voting Rights)

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    @Leila

    I'm not anti-vaxx either. But, during my sudden ME viral onset I was vaccinated x4 (!) within a 2 month period. It was terrible timing and I'll never know if that triggered ME. I have not had a vaccine since (28 years).

    My immune system feels like it has been over active for the last 15+ years. I'm a little concerned about receiving a vaccine and becoming worse.
     
  12. Frankie

    Frankie Established Member (Voting Rights)

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    Here is the link to Professor Sir Stephen Holgate’s lecture on COVID19. Definitely worth a watch.

    https://www.youtube.com/watch?v=NjOaV4wjwJs




    The current ME Association poll is on the flu vaccine, who has it and the aftereffects on people with ME. It looks like there is a 50/50 chance of either no ill effects or a deterioration in ME if you have the vaccine. I am in favour of vaccination but hesitant to have one myself. My immune system is very over-reactive. The risk of deteriorating is fearful.
     
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  13. TrixieStix

    TrixieStix Senior Member (Voting Rights)

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    Exactly. People seem to lose sight of the fact that SARS-Cov-2 and Covid-19 are separate things. The former being a virus and the latter being the disease it can cause. We don't need a vaccine that prevents SARS-Cov-2 infection we need one that prevents Covid-19.

    Perhaps later down the road one may be developed that blocks infection?

    Reading further on the issue I see concern that a vaccine that only prevents symptoms development (Covid-19) would maybe leave the elderly vulnerable due to a possibly less robust reaction to the vaccine and that we would also need to meet a certain threshold in terms of % of population vaccinated in order to protect those them to the fullest.

    Does any of that pass the smell test?
     
    Last edited: Oct 20, 2020
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  14. Snow Leopard

    Snow Leopard Senior Member (Voting Rights)

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    I was vaccinated against mumps and still got mumps. Pertussis (whooping cough) seems to lead to a mild infection even in those who have been vaccinated and so on...

    So the yardstick for (efficacy) of the SARS-CoV-2 vaccine is much the same as existing vaccines.

    As for your other concerns, I agree. One key point that many people seem to miss is the viral vector (lentivirus or adenovirus) and RNA/DNA vaccines need higher doses than subunit vaccines since they need to "infect" the cell before the antigen protein is actually produced. Whereas subunit vaccines induce immunity directly. The higher doses increase the risk of autoimmune consequences by a magnitude of order or more (autoimmune cytopenia, Transverse myelitis, Guillain-Barre syndrome etc.)

    The discussion of mucosal immunity arises from the claims about preventing infection (and has been discussed in other media articles on this topic). A key point to note is that only the live (recombinant viral-vectored) vaccines are suitable for oral/nasal administration. Hence some of the discussion about administration methods is from the people who are pushing for this class of vaccine over the others (including AstraZeneca). Yet I have concerns (due to mechanistic reasons) that this vaccine type will have the worst symptom reduction versus side effect profile.
     
    Last edited: Oct 20, 2020
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  15. Sasha

    Sasha Senior Member (Voting Rights)

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    Just seen this about 'active challenge' trials:


    https://www.bbc.co.uk/news/health-54612293
     
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  16. Mithriel

    Mithriel Senior Member (Voting Rights)

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    I am a great believer in vaccines and can understand why they need to develop one to get covid-19 under control. I get the flu vaccine every year and have never had a problem but I am wary about being among the first to get this one when it is available.

    It is a completely new entity and we will not know what the side effects are until it has been used widely. It would make sense to give it too healthy key workers first as they could withstand any side effects better than the likes of us.

    That sounds cold, but they are the ones most likely to get infected with all the risks attached to that and the economic impact of not being able to work is worse for them than people who cannot work already.

    Basically, we can lower our risk of disease by isolation so the virus should go to those who cannot or do not want to take other preventative measures.

    I say this assuming the vaccine is effect in the vast majority of those vaccinated.

    Every disease has its own risk profile. Diseases like diphtheria attacked children and killed them quickly so there was no doubt a vaccine should be used even if there were side effects. They demanded that school teachers should no longer be vaccinated against TB because case numbers had dropped so low the risk of side effects was greater than the risk of disease for instance.
     
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  17. Mij

    Mij Senior Member (Voting Rights)

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    The immune response to the vaccine might not last, and then we will need a booster shot monthly (twice?) or yearly?

    My second Hep B jab was the 'one' that negatively affected my stamina and brought me down.
     
  18. Hutan

    Hutan Moderator Staff Member

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  19. Wits_End

    Wits_End Senior Member (Voting Rights)

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    How a BREATHALYSER could tell if you have coronavirus

    http://www.msn.com/en-gb/health/med...-you-have-coronavirus/ar-BB1adGSR?ocid=ASUDHP

     
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  20. Solstice

    Solstice Senior Member (Voting Rights)

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    I haven't read the article, but there was an article in De Volkskrant about a Dutch breath-test that could tell about 75% of people with symptoms immediately that they didn't have covid. The others would still have to be tested. Apparently a Finnish firm is working on the same.
     
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