What is the causative microorganism for Herpetic gingivostomatitis?

Herpetic gingivostomatitis is primarily caused by the herpes simplex virus (HSV), specifically type 1 (HSV-1). This viral infection is most often seen in children and may present with painful sores in the mouth and swollen, bleeding gums. The herpes simplex virus is known for establishing latency in the body after the initial infection, leading to possible recurrent outbreaks, often triggered by factors such as stress, illness, or sun exposure.

In summary, the herpes simplex virus is the causative agent of herpetic gingivostomatitis due to its direct role in the infection and symptom development. Other viruses, such as the herpes zoster virus, which causes shingles, are not responsible for this condition, as they pertain to different types of herpes infections. Similarly, bacteria like Borrelia vincentii, which can cause other oral conditions but not herpetic gingivostomatitis, are unrelated to this specific viral infection.