About the Authors

Cara N. Halldin

vgx5@cdc.gov

Affiliations Epidemic Intelligence Service Program, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, West Virginia, United States of America

Eva Suarthana

Affiliations Epidemic Intelligence Service Program, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, West Virginia, United States of America

Kathleen B. Fedan

Affiliation Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, West Virginia, United States of America

Yi-Chun Lo

Affiliations Epidemic Intelligence Service Program, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America, Missouri Department of Health and Senior Services, Jefferson City, Missouri, United States of America

George Turabelidze

Affiliation Missouri Department of Health and Senior Services, Jefferson City, Missouri, United States of America

Kathleen Kreiss

Affiliation Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, West Virginia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CNH ES KK. Performed the experiments: CNH ES KBF. Analyzed the data: CNH ES KBF. Contributed reagents/materials/analysis tools: KBF YCL GT KK. Wrote the paper: CNH KBF KK.