bacteria
The cause of Seurat's death is uncertain, and has been attributed to a form of meningitis, pneumonia, infectious angina, and/or (most probably)diphtheria. As far as I can find out diphtheria does not come in different types.
Diphtheria is an infectioncaused by the bacterium Corynebacterium diphtheriae.
Some examples of unuseful microbes include certain types of bacteria that cause food spoilage, mold that can damage crops or buildings, and certain types of parasites that cause disease in humans and animals. These microbes are considered unuseful because they do not provide any beneficial impact on their environment or host.
The Variola Major Virus Microbe
No.
The bacteria know as bacterium Corynebacterium diphtheriae cause diphtheria.
There are several types of microbes that could cause infection and they may be acute chronic or latent infections. A microbe that could cause an acute infection is rhinovirus, one that could cause a chronic infection is hepatitis C and one that could cause a latent infection is herpes zoster.
There are thousands of different types of microbes. They are all microscopic but at the same time they are very much different from each other. So each can cause individual or no disease. In fact very few of them cause diseases.
Bacteria cause both anthrax and diphtheria.
Microbial disease.
Microbes don't cause HIV. HIV stands for Human Immunodeficiency Virus, and the causative agent is a virus.
Majority of the microbes do not cause the disease. The disease causing microbes also, probably, keeps your species healthy and your immune system tuned.