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The vaccine isn't doing anything in your body to fight COVID-19 infection actively. Your immune system is doing the fighting regardless.

• newsclues 5y ago
  That is not what I said. “ your immune system may not learn how to fight COVID-19 as well, because the vaccine is present and doing something.”
  • ubercore 5y ago
    But the vaccine being present isn't "doing something". The thing it did has already happened.