Is yersinia pestis caused by a virus or a bacteria?

Answer 1

Actually, the plague is a bacterial disease. It can be spread to humans and animals by infected fleas. Plague has three forms:

• Bubonic Plague

• septicemia plague

• pneumonic plague

Answer 2

Yersina Pestis is a form of Bacteria.

Though some say it was a virus in the middle ages different from what we think today is pestis, because of its effectiveness in spreading from people to people. Charanten would not have been useful, if it really were a bacteria. They say it was more like ebola those times. And aswell in the middle ages the "black death" coloured the whole skin of the enire body, as a resault of the circulation system. In the bubonic plague, there were only a few black bubos.

Aome find out that those people, who are descendent of middle ages pestis survivors, inherited a protein mutation, that make tham to be resisten to AIDS.

That also stenght the virus theory.

However, a professor says based on her research, that it was a bacteria attacked by a virus, which made the bacteria so virulent.

Answer 3

Bubonic plague is a zoonotic disease, circulating mainly among small rodents and their fleas,and is one of three types of infections caused by Yersinia pestis (formerly known as Pasteurella pestis), which belongs to the family Enterobacteriaceae

Bubonic plague is caused by a bacteria.

Answer 4

No, it is caused by a bacterium called Yersinia pestis.

Answer 5

no it is not. it is actually caused by infected fleas. that is how animals and humans developed it.

Answer 6

The black death is believed to have been caused by yersinia pestis, a bacterium.

Answer 7

No. By fleas.