6 ms·

It used to mean something that actually gave you immunity to something. Like Polio.

• cantSpellSober 4y ago
  No, I think it still meant something that reduces the spread infectious diseases. Like the COVID and Flu vaccines, the Polio vaccine does not provide 100% immunity to 100% of recipients. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4974751/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4974751/
  • Izkata 4y ago
    > something that reduces the spread infectious diseases. Like the COVID That one doesn't do that though.
    • cantSpellSober 4y ago
      don't forget the microchips amirite?!
• ceejayoz 4y ago
  No, it didn't. That's "sterilizing immunity", which is a feature of some but not all vaccines. Flu shots, for example, have never given full immunity to the flu, but they've always been vaccines. In fact, some forms of the polio vaccine can give you polio. https://www.cdc.gov/vaccines/vpd/polio/hcp/vaccine-derived-poliovirus-faq.html https://www.cdc.gov/vaccines/vpd/polio/hcp/vaccine-derived-p...
  • Izkata 4y ago
    Those can give people around you polio while you remain immune.
    • ceejayoz 4y ago
      If you're shedding active virus, you're infected with polio, even if it's an asymptomatic infection.