Pfizer's vaccine was "less effective than we had t
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Pfizer's vaccine was "less effective than we had thought".
Read More: https://investorshangout.com/post/view?id=602...z6kD5gVTqY
Of course. And those infected after vaccination are hosts to strains that will mutate and likely will (or successive variants will) evade immunity from that vaccine.
This won't be going away anytime soon.