丁型肝炎(HD)过去称为德耳他(δ)肝炎,是一个新的正在发展中的肝炎研究领域。丁型肝炎是由δ因子现在被定名为丁型肝炎病毒(HDV)引起的,HDV有高度致病性,能引起急、慢性肝炎。最近研究提出,HDV不仅能引起HBsAg(乙肝表面抗原)无症状携带者发生暴发流行,同时能导致慢性HBsAg的严重感染,最近在美洲已有乙型肝炎病人受HDV重叠感染流行,急性病死 Hepatitis D (HD), formerly known as Dental Hepatitis (delta), is a new and growing area of ​​hepatitis research. Hepatitis D is now caused by the delta-factor designation of the hepatitis D virus (HDV), which is highly pathogenic and causes acute and chronic hepatitis. Recent studies suggest that HDV not only causes an outbreak of HBsAg (hepatitis B surface antigen) asymptomatic carriers but also leads to severe infection with chronic HBsAg. Recently, hepatitis B patients have been prevalently infected with HDV in the Americas, and acute death