About the Authors

Patricia Schirmer

pschirme@stanford.edu

Affiliations Office of Public Health Surveillance and Research, Department of Veterans Affairs, Palo Alto, California, United States of America, Division of Infectious Diseases & Geographic Medicine, Stanford University School of Medicine, Stanford, California, United States of America

Cynthia Lucero

Affiliation Office of Public Health Surveillance and Research, Department of Veterans Affairs, Palo Alto, California, United States of America

Gina Oda

Affiliation Office of Public Health Surveillance and Research, Department of Veterans Affairs, Palo Alto, California, United States of America

Jessica Lopez

Affiliation Office of Public Health Surveillance and Research, Department of Veterans Affairs, Palo Alto, California, United States of America

Mark Holodniy

Affiliations Office of Public Health Surveillance and Research, Department of Veterans Affairs, Palo Alto, California, United States of America, Division of Infectious Diseases & Geographic Medicine, Stanford University School of Medicine, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PLS CL GO MH. Performed the experiments: PLS. Analyzed the data: PLS CL GO MH. Wrote the paper: PLS CL GO JL MH. Helped with editing as well as writing the paper: JL.