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FromTheRafters FromTheRafters is offline
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Default OT: Vaccine causes virus mutations?

on 6/8/2021, Pancho supposed :
On 07/06/2021 17:20, Commander Kinsey wrote:
Doesn't giving a coronavirus vaccine to everyone increase the chances of
the virus mutating to avoid the vaccine?* So we should be using it
sparingly.


That depends...

Mutation pressure depends on how frequently virons try to establish
themselves in a vaccinated host.

The more vaccinated people there are, the more likely that a single viron
will find a vaccinated host. On the other hand vaccinating people may reduce
the prevalence of disease, the total number of virons. So less virons come
into contact with any host. The expected number of virons trying to infect a
vaccinated host will be a function of both.

A consequence of this is that it *may* be a bad idea to vaccinate in the
middle of a surge. That would depend on a lot of factors which I don't know
the answer to. So I'm just a ****wit on the internet, idly pondering.

Maybe epidemiologists know the answer, but I haven't heard many discussing
it.


I had heard that about the vaccines too. You don't necessarily want to
vaccinate while the virus is in exponential growth, it is more
effective when other measures have brought the R_eff value down.