Tthe Bubonic Plague - which killed a lot of people and that there was no cure for.
The fleas on rats. The rats had a disease that the fleas got then jumped onto the people to spread the desease.
many things
no only if the rats are diseased
Rats and mice.
No. In the middle ages in Europe people did eat door mice.
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.
Ships were transported back from China which were carrying black rats (Infected Rats) and the fleas that lived on them sucked their blood and then sucked humans blood, therefore giving us the infected blood, therefore giving us the bubonic plague.
Black Diseased Rats
if you mean through the Middle Ages this was the bubonic Plague caused by rats.
Pet mice and rats do not carry any diseases. Wild rats caused the black plague in the middle ages.
During the Middle Ages, the most common idea about spread of disease was that the cause was bad air, which they called maisma. Believe it or not, one result of this belief was that medieval people bathed a lot.
The plague started from the flees on rats in ancient Europe in the middle ages it killed 2/3 of Europes population.