Viral hepatitis cannot be transmitted through the air, and different types of viral hepatitis are transmitted through different routes and have different clinical symptoms. The characteristics of the disease vary; for example, hepatitis A and hepatitis E are primarily transmitted through the digestive tract, via the fecal-oral route. This typically occurs after consuming food or water contaminated with hepatitis A or E virus. Hepatitis B and hepatitis C viruses are mainly transmitted through blood, sexual contact, and from mother to child, with mother-to-child transmission being the most significant route.