Hepatitis is a liver inflammation caused by virus. As different types of virus infections, it can be divided into A, B, C, D and E hepatitis, these five are the most common and most public concern. People with hepatitis A, B or E are more likely to have acute liver failure and may require liver transplant in no time. The coinfection of hepatitis B and C can induce the chronic liver disease, and further increase the chance of liver cancer.

肝炎是由病毒引起的肝臟炎症。因應不同類型的病毒感染，可分為A，B，C，D和E型肝炎。這五種是最常見和最受公眾關注的肝臟炎症。甲型，乙型或戊型肝炎患者很大機會會出現急性肝功能衰竭，可能需要及時進行肝移植。而共同感染乙型肝炎和丙型肝炎更可誘發慢性肝病，進一步增加肝癌發生的機會。