Should people who are HBsAg positive be tested for hepatitis D (HDV)?
Why hepatitis D depends on hepatitis B, which HBsAg-positive people should ask about HDV testing, and what to do after a positive or high-risk result.
CDC Hepatitis D Basics
CDC 面向公众的丁型肝炎说明，解释 HDV 只能感染已有 HBV 感染的人、传播途径、风险人群、症状、筛查检测和预防。
Open original source- Organization
- Centers for Disease Control and Prevention
- Country or region
- United States
- Language
- en
- Source type
- fact_sheet
- Published
- Source updated
- Last checked
- 2026-06-26
- Credibility note
- 国家公共卫生机构