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What are the odds a healthcare worker hasn’t been repeatedly exposed to Covid by this point?

• sjwalter 5y ago
  A bit under half of Americans have already caught covid. Even without vaccines, that means nearly half of Americans already have natural immunity which is vastly superior to vaccine immunity. https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/burden.html https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/burd...
  • beerandt 5y ago
    >A bit under half of Americans have already caught covid No- that many have had a positive test or other diagnosis confirming covid. There were plenty of non-hospitalized, non-diagnosed cases before the tests existed. And plenty of people have had it and never saw a reason to get a test to confirm it. I'd say we're far above that estimated number.
    • sjwalter 5y ago
      So that's not quite true. The CDC provides the estimate you're talking about which is what my post originally cites (~146mm Americans infected). That's their estimate based on the much smaller number of positive tests and hospitalizations, using their models about how many cases are missed by surveillance.
• konfusinomicon 5y ago
  makes me wonder if repeated exposure that doesn't result in the virus replicating enough to take hold in the body gives you any kind of immunity, or if that is even a possibility. like how many viral bodies does it take, just 1?
  • q1w2 5y ago
    It absolutely does. An very low dose initial infection can prime the immune system and give you an asymptomatic case. ...but even if you full blown covid, there is no exemption from the vaccine requirement - that's one of the main arguments of many health workers.