The human body contains good bacteria but would I be wrong in saying that this bacteria can turn bad if something went wrong?
The immune system detects an infection and sends out white blood cells etc. to defeat it and protect the body, if this is successful the body would then become immune to the infection. Having said that, the body would then know the properties of that bacteria or virus or so forth.
My question is this, would the body's bacteria be able to evolve into bad infectious bacteria (with the information that the immune system has) then that could harm the body if something inside or outside the body happened. If this was possible, would this not be able to cause an infection in the body?