Do all bacteria that enter the human body cause disease?

Not all bacteria that enter the human body are dangerous to health and life. Only a few species can be dangerous. These bacteria are called bacilli. They can be dangerous due to the fact that in the process of their life toxic substances are released that poison the body. Most bacilli can cause food poisoning, which resolves over time without medication. But some bacteria can be life-threatening. For example – clostridium botulinum, which cause Botkin’s disease.