Pied piper a plague risk?
Mostly about how small reservoirs can still carry epidemic disease
The computer model shows that plague can persist in very low rat populations (about 60,000) and spreads to humans only when some random event reduces rodent numbers. And it simulates what happens when there is a drastic reduction in rat numbers, caused by anything from mass poisonings to a strangely dressed man playing a hypnotic pipe.
Also, the 48 year “rat flood” know as the bamboo death that results in famine.