# CDC Hepatitis D Basics

OpenHBV source page: https://openhbv.bangbo.dev/sources/cdc-hepatitis-d-basics?locale=en
Canonical Markdown: https://openhbv.bangbo.dev/sources/cdc-hepatitis-d-basics.md?locale=en
Original URL: https://www.cdc.gov/hepatitis-d/about/index.html

## Metadata

- Organization: Centers for Disease Control and Prevention
- Country or region: United States
- Language: en
- Source type: fact_sheet
- Published: not listed
- Source updated: not listed
- Last checked by OpenHBV: 2026-06-26
- Credibility note: 国家公共卫生机构

## Summary

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。

## Related OpenHBV Articles

- Should people who are HBsAg positive be tested for hepatitis D (HDV)?
  URL: https://openhbv.bangbo.dev/articles/should-people-who-are-hbsag-positive-be-tested-for-hepatitis-d-hdv?locale=en
  Markdown: https://openhbv.bangbo.dev/articles/should-people-who-are-hbsag-positive-be-tested-for-hepatitis-d-hdv.md?locale=en
  Translation key: article-f892a9b006fd
  Language: en
  Topic: Test Results
  Published: 2026-06-26
  Review status: source_backed
  Last reviewed: 2026-06-26
  Summary: 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.

## Use Notes

This page is a source record, not medical advice. Use the original source URL above to verify claims, publication details, updates, and scope. OpenHBV records the last checked date so readers and LLM retrieval systems can judge freshness.