> They were primarily responsible for the spread of the Black Death/Great Plague While rats can and do spread plague, you might be interested in the widely-cov

> They were primarily responsible for the spread of the Black Death/Great Plague While rats can and do spread plague, you might be interested in the widely-covered paper that came out last year concluding that rats probably did not cause the Black Death, and that it was instead spread by fleas and lice on travelling humans: Popular: https://news.nationalgeographic.com/2018/01/rats-plague-black-death-humans-lice-health-science/ https://news.nationalgeographic.com/2018/01/rats-plague-blac... Scientific: https://www.pnas.org/content/early/2018/01/09/1715640115 https://www.pnas.org/content/early/2018/01/09/1715640115