Can someone get hepatitis b from the single use of a person infected by the disease toothbrush?

It's possible: Hepatitis a is contracted from contaminated food ; water. Hepatitis b ; c can be both acute or chronic ; is spread through contamination with body fluids like blood (on toothbrush). Both hep b ; c are more commonly transmitted through sexual contact or sharing of needles. If at risk, get checked ; prophyllaxed.

Possible: It is possible to get hepatitis by transferring blood and bodily fluids. Using the same tooth brush.

No: Hepatitis b is not transferred through saliva.