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Originally Posted by pip08456
I think he's spot on.
I suppose every variant of every virus has that potential but as I've asked before:- Can anyone name any virus in the history of man that has done this? I still await a reply.
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This one?
There’s already evidence of reduced immunity vs variants, and one poor sod who has been infected by original covid, alpha covid and delta covid despite being double vaccinated between alpha and delta.
Will immunity drop overnight from high levels to zero, probably not, so long as booster vaccinations track the virus over time. Major economies are already betting big on this with huge amounts of mRNA vaccines procured through to 2023. You only need to chop away 20-30% from 70% a couple of times to hit near zero effectiveness.