Plague is an infectious disease that affects animals and humans. It is caused by the bacterium Yersinia pestis.

Was the bubonic plague a virus or bacteria?

Bubonic Plague is caused by the bacteria Yersinia pestis. Many rodents, such as rats, carry the infected fleas and in turn become sick.

Can you get bubonic plague twice?

It is possible to get plague more than once. How do you get plague? It's usually spread to man by a bite from an infected flea, but can also be spread during handling of infected animals and by airborne droplets from humans or animals with plague pneumonia (also called pneumonic plague).