What bacteria causes diseases or illnesses?

Answer 1

Only some bacteria is harmful to the human body. Most bacteria on and inside the human body are necessary for regular processes to occur. For example, there are bacteria in your mouth and intestines.

Answer 2

Yes and no, some bacteria are considered normal flora, which means they normally reside within your body without involving an immune response in healthy individuals. However, if the normal flora is altered, or the immune system is suppressed, any bacteria can become an opportunistic pathogen and illicit an immune response. There are also other certain bacteria which cause disease no matter where they harbor (i.e. Bacillus anthracis, a.k.a anthrax).

There are also certain areas of the body considered "sterile sites", which indicates that there are normal flora. Such examples include cerebral spinal fluid (CSF), pericardial and perotineal fluids, and the blood. When bacteria enter these areas, they are considered pathogens whether or not they are normal flora which reside in other places of the body.

Answer 3

No, some bacteria are beneficial and are helpful to us. Like bacteria used in cheese

or yogurt making are very beneficial.

Answer 4

Some bacteria can indeed cause diseases. Some, such as viral bacteria, have no treatments or cures.

please give me trust points, i have this from an official sources!

Answer 5

A small portion, about 1%, of bacteria cause disease. They are often called germs, along with most viruses, some fungi, some worms, and prions.