The Great Plague

Rather educational and important in correcting the misconception that rats and fleas spread the plague.

Xand Van Tulleken is on track throughout the series, but the historians are set in their old teachings and wobble from fleas to lice and back again.

Interesting is it though that they at the time (1665-1666) had some methods and observation to fight the plague, though not understanding the science behind it yet.