• a_jug_of_marx_piss [he/him]
      hexagon
      ·
      4 years ago

      "For a vaccine with 100% efficacy that gives life-long protection, the level of herd immunity as a proportion of the population, pc, required to block transmission is [1 – 1 / R0], where R0 is the basic reproduction number.16 Given an R0 value before lockdowns in most countries of between 2·5 to 3·5, we estimate the herd immunity required is about 60–72%. If the proportional vaccine efficacy, ε, is considered, the simple expression for pc becomes [1 – 1 / R0] / ε. If we assume ε is 0·8 (80%), then the herd immunity required becomes 75–90% for the defined range of R0 values."

      Still, it's better than nothing even without achieving herd immunity.

    • kilternkafuffle [any]
      ·
      edit-2
      4 years ago

      The immuno-compromised probably can't take it. So if you've got HIV or auto-immune disorders that make you take immuno-suppressant drugs or have cancer and your immune system gets fucked by chemo. I don't know about pregnant women and the Covid vaccines - but they also can't take certain vaccinations. This makes up something like 5-15% of the population.

      This means that everyone healthy should get vaccinated. Because the immuno-compromised need everyone else of us to get herd immunity. If you're healthy - don't be a free rider and do your part for humanity as a whole.

    • Coolkidbozzy [he/him]
      arrow-down
      2
      ·
      4 years ago

      Idk what the exact percentage is for covid but with most diseases, around 95% of the population needs to be vaccinated for herd immunity to happen