About the Authors

Rafael Chacon

rchaconf@gmail.com

Affiliation Influenza Unit, University of the Valley of Guatemala, Guatemala City, Guatemala

Alexey Wilfrido Clara

Contributed equally to this work with: Alexey Wilfrido Clara, Nathalie El Omeiri, Marc-Alain Widdowson, Eduardo Azziz-Baumgartner

Affiliation Influenza Program, Centers for Disease Control and Prevention for Central American Region, Guatemala City, Guatemala

Jorge Jara

‡ These authors also contributed equally to this work.

Affiliation Influenza Unit, University of the Valley of Guatemala, Guatemala City, Guatemala

Julio Armero

‡ These authors also contributed equally to this work.

Affiliation Health Surveillance Directorate, Ministry of Health of El Salvador, San Salvador, El Salvador

Celina Lozano

‡ These authors also contributed equally to this work.

Affiliation National Influenza Center, Ministry of Health of El Salvador, San Salvador, El Salvador

Nathalie El Omeiri

Contributed equally to this work with: Alexey Wilfrido Clara, Nathalie El Omeiri, Marc-Alain Widdowson, Eduardo Azziz-Baumgartner

Affiliation Influenza Unit, Training Programs in Epidemiology and Public Health Interventions Network, Guatemala City, Guatemala

Marc-Alain Widdowson

Contributed equally to this work with: Alexey Wilfrido Clara, Nathalie El Omeiri, Marc-Alain Widdowson, Eduardo Azziz-Baumgartner

Affiliation Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Eduardo Azziz-Baumgartner

Contributed equally to this work with: Alexey Wilfrido Clara, Nathalie El Omeiri, Marc-Alain Widdowson, Eduardo Azziz-Baumgartner

Affiliation Influenza Division, National Center for Immunization and Respiratory Diseases, 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: RC AC JJ JA. Performed the experiments: CL. Analyzed the data: RC AC JJ EA NE. Contributed reagents/materials/analysis tools: CL. Wrote the paper: MW EA NE.