Sydney smallpox epidemic
Tuesday 15th March 2022 11:30 am
We’re now quite familiar with terms like ‘herd immunity’ and ‘epidemic’, and that when separate groups of people—with separate germs—meet for the very first time, things can turn out badly. If you have never been exposed to a specific germ you won’t be primed for protection against it.
Read more here:: Sydney smallpox epidemic
© 2023 Karl S. Kruszelnicki Pty Ltd