Regarding the question of whether viral hepatitis can be transmitted through saliva, it depends on the actual situation. Some types of viral hepatitis that are transmitted through the fecal-oral route in the digestive tract might also be transmitted through saliva, such as Hepatitis A and Hepatitis E, which are acute viral hepatitis transmitted through the fecal-oral route. Generally, saliva is considered contagious in these cases. However, for Hepatitis B, Hepatitis C, and Hepatitis D, these types of viral hepatitis are not generally transmitted through the digestive tract, and therefore, saliva is not considered contagious.