Viral hepatitis is a class of diseases that specifically includes five types: hepatitis A, hepatitis B, hepatitis C, hepatitis D, and hepatitis E. Each type has a different mode of transmission, hence the prevention methods vary for each. Specifically, hepatitis A and E are transmitted via the fecal-oral route, meaning the disease is mainly spread through consuming water and cold foods contaminated with the viruses, and foods that have not been fully cooked, leading to infection. Hepatitis B and C, on the other hand, are mainly transmitted through blood and sexual contact. Prevention of hepatitis B and C involves avoiding contact with blood products from infected individuals and unsafe sexual practices.