So, I made a little animation trying to explain how herd immunity works.
— Robert Rohde (@RARohde) October 2, 2019
When enough of the population has been vaccinated, a disease is no longer able to spread effectively, protecting even the unvaccinated. The percentage needed varies with the disease.#VaccinesSaveLives pic.twitter.com/bf8FlErEdO
via Twitter https://twitter.com/RARohde
October 02, 2019 at 05:12AM
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