Since humanity's first steps, we have been plagued by disease-causing pathogens. We cannot see them, feel them, or hear them, but they have killed more humans than anything else in history. You have probably heard of the most grisly ones: smallpox, the Black Death, malaria, Covid-19. But there are many more. Which diseases have been the deadliest, and how have we found ways to fight them?
How have diseases plagued human history?
