Bubonic plague was a serial visitor in European Middle Ages
Outbreaks erupted in years following balmy temperatures in distant Asia, suggesting a possible link
![rat](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/02/kb_ratplague.jpg?fit=860%2C460&ssl=1)
RATTED OUT Rats have long been blamed as a long-term reservoir for Black Death, even though the plague easily killed them. New research suggests the plague repeatedly hitched a ride from Asia to Europe instead.
Tom McHugh/Science Source