Plague is a serious, potentially life-threatening infectious disease that is usually transmitted to humans by the bites of rodent fleas.
Flea
The carrier of this plague is the rats the carrier of the plague is actually fleas and ticks because they bite the rats and give them the plague. So the carriers of the plague are most rodents, ticks, and fleas.
The animal that started the plague first was the rat. They had parasites in their skin and spread it to humans
The Life and Legend of Wyatt Earp - 1955 Plague Carrier 4-13 was released on: USA: 9 December 1958
Plague is caused by a bacteria. Bacteria are not animals.
locusts
Nosferatu mean 'plague carrier' which is what Count Orlock did to the city of Bremen.
Rats, fleas, and mice where mainly the first to get the plague and spread it around.
black rats.
(The fleas carried on) the Black Rat.
Metazoa.
It was spread by fleas, who normally host on rats, yet in some cases, they used humans as a host, and thus started the plague. It cannot be spread from human to human; only way is for the flea to infect you.