Germ History: Milkmaids Inspire Vaccines, But The Germs Keep Coming
For most of human history, we had a lot of bad ideas about how we were getting sick. We also had plenty of bad ideas about how to prevent it, like bloodletting, drilling large holes in the head and drinking arsenic.
The world is now in uncharted territory when it comes to infectious diseases. We're facing a whole new era. Over the past century, the number of new infectious diseases cropping up each year has nearly quadrupled. The number of outbreaks per year has more than tripled.