What diseases were carried by rats in world war 1?

Answer:
Rats carried many diseases but one of the most tragic diseases was the plague, also known as the "Black Death".
Rats also caused Vile's disease which affected in the men in the trenches.
First answer by ID1220922386. Last edit by Solieldete. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 8 [recommend question].