About the Authors

James E. Norton Jr

Affiliation Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

Andrew G. Lytle

Affiliation Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

Shixue Shen

Affiliation Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

Evgeni P. Tzvetkov

Affiliation Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

Corin L. Dorfmeier

Affiliation Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

James P. McGettigan

james.mcgettigan@jefferson.edu

Affiliations Department of Microbiology and Immunology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America, Jefferson Vaccine Center, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JEN AGL JPM. Performed the experiments: JEN AGL SS CLD EPT. Analyzed the data: JEN AGL JPM. Contributed reagents/materials/analysis tools: JPM. Wrote the paper: JEN JPM.