1. Background Introduction 2. Case Analysis of Infant Death Caused by Hepatitis B Vaccine 3. Discussion on Safety Issues of Hepatitis B Vaccine 4. How to Ensure the Safety of Hepatitis B Vaccination 1. Background Introduction In 2013, an infant death caused by hepatitis B vaccine occurred in Yueyang City, Hunan Province case. This has attracted widespread attention and raised questions and concerns about the safety of the hepatitis B vaccine. Since then, similar incidents have occurred frequently, causing great distress and panic to people. 2. Case analysis of infant deaths caused by hepatitis B vaccine According to reports,