It is believed so. Actually I learned that from Ratatouville on the bonus features "My friend the rat" it said that the Brown (Nowegian) Rat actually stopped the plague.
Rats were the vector of the bubonic plague
Beacause rats have fleas.
By a Flea. They got to the rats first then when the rats died the fleas came for humans causing the Black or the Bubonic Plague
Rats and Mice
the black death (bubonic plague) was mainly in Europe but spread on ships abroad by the fleas on rats
the bubonic plague, spread by rats bitten bye infected fleas
Bubonic Plague was spread by being bitten by fleas that had bitten infected rats.
rats <><><> Bubonic Plague is transmitted by fleas, which were carried by rats. There was a fear of witches, and of the "familiar" of a witch- the cat- so cats were killed. When cats were killed, rat population increased. Increase in rats meant more cases of bubonic plague.
The answer is bubonic plaque
rats infestation or spread of bubonic plague from rats.
The carrier of this plague is the rats the carrier of the plague is actually fleas and ticks because they bite the rats and give them the plague. So the carriers of the plague are most rodents, ticks, and fleas.
Plague was most commonly transmitted by fleas and rats.