About the Authors

Michael A. Purdy

mup3@cdc.gov

Affiliation Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Yury E. Khudyakov

Affiliation Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MAP YEK. Performed the experiments: MAP. Analyzed the data: MAP YEK. Contributed reagents/materials/analysis tools: MAP. Wrote the paper: MAP YEK.