at that time of the plague people had poor hygiene which attracted rats to get comfortable at dirty areas and when this happened flees eventually got on them and the rats managed to get on a boat and as they moved around flees were spread and humans ought the disease
The black death
Typhus
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.
They thought that rodents start the disease, because they can move and spread fleas.
The Bubonic Plague.
It was spread by fleas carried by Black rats.
they carried fleas that carried the disease and when they bit they infected their victim
Rats and fleas carried the disease and spread it to the people of Europe.
It was not so much people that spread the disease as fleas from rats.
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.
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
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.
The Black Death was spread by rats and the fleas they carried. The disease spread slowly across Asia as it moved through the rat population. Rats travelled on ships, which crossed the Mediterranean, and the rats got into various port cities, spreading the disease. The Black Death can be spread from person to person, but the spread is much slower and ends, in the absence of the rats and fleas.