Molecular Genotyping of Hepatitis A Virus, California, USA, 2017–2018

Abstract

We implemented subgenomic and whole-genome sequencing to support the investigation of a large hepatitis A virus outbreak among persons experiencing homelessness, users of illicit drugs, or both in California, USA, during 2017–2018. Genotyping data helped confirm case-patients, track chains of transmission, and monitor the effectiveness of public health control measures.

Keywords

• hepatitis A virus
• outbreak
• California
• genotyping
• public health
• viruses