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A (possible) solution to Covid-19

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Re: A (possible) solution to Covid-19

#41
post #11

Agreed that the risk:reward ratio here would be worth it. This sounds super promising. That being said, how is it known that having had the mutated strain provides immunity to the dangerous strain?

They know which parts of the RNA express the spike protein that our antibodies recognise. If the spike protein is not affected, then the virus should still be good for training our immune system to respond to.

Re: A (possible) solution to Covid-19

#42
post #36

Earlier quoted context omitted.

I am a virologist - well I have published many papers in this area. I have a PhD in molecular microbiology and have been a tenured professor (I now work in the biotech sector). This is not intended to be a scientific paper, but a layman’s summary of the idea so non-technical people can understand the idea. It is not risky to go looking for a naturally attenuated virus. This is the first step that needs to happen.

It would probably be helpful to mention that at the start or end of the post. Clear, non-inflated credentials/background with links. (I sometimes see this in italics at the top)

It is not really my style to boast about myself, but yes I should at least provide a link to the about me page.

Re: A (possible) solution to Covid-19

#43
post #35

> More than 50% of the people infected with SARS-CoV-19 are asymptomatic (i.e. they have no illness). Note: asymptomatic at the time of testing. They may still develop symptoms over time. https://www.icelandreview.com/sci-tech/is-icelands-coronavir... https://twitter.com/cmyeaton/status/1246196001775460358

Yes this is true. For the purpose of my idea it doesn’t matter if the person is asymptomatic or they just have a mild case. What is important is the strain identified doesn’t put people in hospital.

Re: A (possible) solution to Covid-19

#45
post #33

From the comments on your site: > One thing is certain with the current situation is we need to take some risks if we are going to solve it quickly. Looking for quick answers in a crisis is really risky. There is a natural push to try to get things back to normal as soon as possible, but developing an attenuated vaccine (even with a potential strain already in existence), takes a lot of time and testing. I certainly…

Not doing something is very risky too. This is a problem with only hard choices.

Re: A (possible) solution to Covid-19

#46
post #34

Earlier quoted context omitted.

A country without other options might be more interested in the idea? I imagine that many first world countries would be too worried about the potential liabilities.

I suspect even the first world will be interested in options like this after a few more months of social isolation.

On second thoughts perhaps the idea wouldn’t work in countries that don’t have an effective lockdown. Could the infection wave of a less dangerous genotype overtake the number of infections of the more dangerous genotype before the population has been mostly infected already?

Re: A (possible) solution to Covid-19

#47
I want to argue that the flaw in this is with the ability to find any strain that consistently causes only minor symptoms. If you infect a whole group of people with Covid-19 then we would see a distribution of severity from no symptoms to lethal. This broad spectrum is really just it's statistical variance (whatever the underlying distribution really looks like).

It is worth comparing this to things like SARS. The distribution of SARS symptoms would be pretty narrow - everyone gets really sick. So the variance for SARS is small compared to Covid-19. The same could be observed for influenza or rhinoviruses.

The problem with a "milder" Covid-19 is that it might still have the same massive variance in symtpom severity. It might kill less people, but it would still be morally bankrupt to let it spread. In fact, it might be preferable to not reduce the mean severity, but just decrease the variance so it never gets nasty enough to kill without being immuno-compromised.

Re: A (possible) solution to Covid-19

#48
> We found, in our 788 confirmed COVID-19 patients, the decreased rate of severe/critical type, increased liver/kidney damage and a prolonged period of nuclear acid positivity, when compared with Wuhan.

So how are we gonna deal this increased liver damage then, if we are actually gonna use this less pathogenic branch of the virus as a quasi-vaccine?

Is there way to reengineer this virus so that it would be less kidney/liver damaging?

Re: A (possible) solution to Covid-19

#49
post #29

You say > The reason why is immunity to respiratory viruses (like corona) doesn’t last long – 6 months to 2 years. I haven’t read anything like this before. It seems like you’re extrapolating from the flu vaccine, which doesn’t last because the flu mutates too quickly. Coronavirus mutate much slower and the thought is that we’ll likely only need one vaccine. Have we actually found any less deadly strains? My understa…

https://www.nature.com/articles/d41586-020-00798-8 > If humans do develop immunity, how long does it last? > That’s another big unknown. Immunity is short-lived for the coronaviruses that cause common colds; even people who have high levels of antibodies against these viruses can still become infected, says Stanley Perlman, a coronavirologist at the University of Iowa in Iowa City. > The evidence is more equivocal fo…

This is a huge problem for the whole vaccine approach and is one of the reasons that it may not be possible to create a conventional vaccine.

Re: A (possible) solution to Covid-19

#50
I don't think the mutations are the reason for asymptomatic cases. Coronaviruses mutate very slowly.

More likely, viral load, immune system strength, overall age and the genetics of the person infected are what determines if the infection is fought off before any symptoms are shown

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