Vincent's disease info

Hi. Is there anybody here who could give me some info on Vincent’s disease?? One friend of mine was recently diagnosed with it and I’m scared that he might be contagious or something. Thanks.

Vincent's disease, also known as Trench mouth, is a complication of mild cases of gingivitis. The most common cause is poor oral hygiene but stress, an unbalanced diet or lack of sleep are other factors that help development of disease. Also, it is more common in people who smoke. Inflammation or infection from Vincent’s disease can spread to nearby tissues of the face and neck, but it is not contagious so you need not to worry.