The answer is bubonic plaque
Bubonic plaque
The fleas; but the rats carried the fleas. So in a sense both.
The plague is caused by the bacterium Yersinia pestis, which is carried by fleas, which were carried by rats.
The infected fleas that spread the disease, The rats that carried the fleas, The ships that carried the rats from port to port. The Bacteria (Yersinia pestis), that infected the fleas.
The Black death was killing people by ships having rats and fleas. Then the fleas carry the plague and then the fleas go on the people and then they will get sick and die.
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.
Fleas carried the plague because they carried bacterium through their bites and the bacterium carried the plague, and rats did not get it because the fleas landed on rats and then jumped to other animals and possibly humans.
It probably means having fleas.
Mobile killing machines that carried fleas with them. Drank beer to relax. Some used drugs to get high before battle and kill many. drank from helmet.
Was carried by fleas.
the plage was spread throughout animals, which carried fleas, and fleas carried the disease. china did not carry the disease, because they had boiling water.
Bubonic plague and Cat Scratch disease can be carried by fleas.