No, bacteria do not cause infections. They are the result of imbalance in your body. Toxins cause the imbalance.

Your bacteria, there are billions of them and thousands of different kinds are able to mutate into even more forms, like Mersa, a flesh eating bacteria we all always have in our bodies, will take over when a lot of tissue is dying.

Bacteria cannot harm you unless it's in you. Then you allow your own bacteria to harm you by introducing toxins and imbalance