Will you get sick from someone else using your toothbrush?

I did take an oral health class, but dont shoot me if I'm wrong. Although sharing a toothbrush may be a common practice when one has forgotten a toothbrush, it may not be a good idea. Many forms of infectious bacteria may be transfered through the sharing of a toothbrush, that something such as kissing or sharing a drink may not pass. These bacteria, that the carrier may be immuned to, can have serious concequences when taken in by another individual.