mostly loius pasture found it out. Some also say that one doctor found its cause, but was killed.
fleas on rats
Bubonic Plague was spread by being bitten by fleas that had bitten infected rats.
Fleas spread the plague
It was spread by fleas. Apex
Rats, fleas, and mice where mainly the first to get the plague and spread it around.
During Plague fleas were among the main factors to spread it. People with Plague had bloody vomit fever and tumors.
The plague was spread by fleas that lived on the rats.
Fleas on rats
(The fleas carried on) the Black Rat.
rats caried fleas and the fleas would make you sick
Flu is spread through contact of an infected. While Plague and malaria is spread via fleas and mosquito.
The rats and fleas carried the black death ** Correction... Rat fleas carried the Bubonic Plague. There is still speculation as to whether the black death was actually bubonic plague as there are very many differences between the pandemics. One theory is that the black death was actually Ebola.