It was spread by fleas, who normally host on rats, yet in some cases, they used humans as a host, and thus started the plague. It cannot be spread from human to human; only way is for the flea to infect you.
The bubonic plague started in Asia and spread to Europe.
the bubonic plague, spread by rats bitten bye infected fleas
the world was dirty
Bubonic Plague was spread by being bitten by fleas that had bitten infected rats.
It was spread by fleas. Apex
rats infestation or spread of bubonic plague from rats.
There was the spread of a plague but the exact nature of the plague is unknown. It is widely believed to be a strain of Bubonic Plague.
traders
The Bubonic Plague.
One human activity that contributed to the spread of the bubonic plague was the movement of infected rats on ships, which carried the disease from one place to another.
The bubonic plague was spread mainly by fleas traveling on the backs of rats in cities and through trade on continental Europe while the influenza spread directly from person to person in crowded public subways and gatherings.
bubonic plague carried by rats and spread by fleas