Comments by "jenni0278" (@jenni0278) on "Biden receives Pfizer’s COVID-19 vaccine" video.

  1. That's pretty much how all vaccines work and all viruses mutate That's why we have a new flu vaccine every single year The mutation of this virus does not change the efficacy of the vaccine and we've known about the mutation for months, But this one is not made with a dead virus like most, it's an mRNA vaccine
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