No. The rats didn't pass the plague to the fleas. The fleas gave it to the rats. If you look it up on a history website then it will be likely that this is the way round it goes. This is the right answer so do take notice of it!! :)
It is plague not plaque noob. Anyway, the blood inside of one rat with the illness gets into the blood sucking flees that then travel to other rats and give them the plague too because of the other rats blood inside of the flea. That is how it is spread but I do not know how the illness started.. at least this helps a bit.
The fleas; but the rats carried the fleas. So in a sense both.
Bubonic plaque
The rats didnt actually get it, it was the fleas which were on the rats and the fleas carried the disease. It was just the rats that carried the flees.
Rats to fleas, fleas to humans
Fleas transmitted the disease from rats to humans.
The fleas on rats. The rats had a disease that the fleas got then jumped onto the people to spread the desease.
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.
Rats which 'traveled' in boats would catch the disease when men traded across Europe. The rats fleas had the disease, when the fleas bite you, it passes to you.
scientist think that the black death was caused by fleas who lived on rats. also fleas carried a disease called bubonic plague and when that disease killed most of the rats and when there were only very few rats to live on the fleas moved to humans giving them the disease.
The answer is bubonic plaque
Most definitely. The Black Plaque AKA Bubonic plaque killed like 1/3 of the human population. It's reason for spreading...fleas. Then through trade, war, and rats, they would get carried.
The rats themselves do not spread disease, but the fleas that are in their fur was well known for spreading the Black Death in the Middle Ages.