Twisdom from RARohde, October 02, 2019 at 05:12AM

So, I made a little animation trying to explain how herd immunity works.

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

— Robert Rohde (@RARohde) October 2, 2019

via Twitter https://twitter.com/RARohde

October 02, 2019 at 05:12AM