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An interesting side discussion to this regarding vaccines: Does the presence of vaccine antibodies exhibit selection pressure on viruses? That is to say, do vaccines inadvertently and indirectly create an 'arms race' scenario?

NOTE: I am not anti-vaccine. This is intended as a nuanced point

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In some cases it does, in some it does not. And yes, the western world taking their flu shot does mean that those who can't afford it might have a problem or a worse problem compared to what would otherwise be. ( Also why many advocate you should only take it if you need it. )

This virus mutates slowly due to proof reader RNA. It most likely mutates too slowly to evade eradication, just like polio or smallpox.

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