About the Authors

Adriana R. Cruz

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Allan Pillay

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

Ana V. Zuluaga

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Lady G. Ramirez

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Jorge E. Duque

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Gloria E. Aristizabal

Affiliation Secretaria de Salud Publica Municipal, Cali, Colombia

Mary D. Fiel-Gan

Affiliation Department of Pathology, Hartford Hospital, Hartford, Connecticut, United States of America

Roberto Jaramillo

Affiliation Fundación Clínica Valle del Lili, Cali, Colombia

Rodolfo Trujillo

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Carlos Valencia

Affiliation Centro Internacional de Entrenamiento e Investigaciones Médicas (CIDEIM), Cali, Colombia

Linda Jagodzinski

Affiliation Walter Reed Army Institute of Research, Rockville, Maryland, United States of America

David L. Cox

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

Justin D. Radolf

Affiliations Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut, United States of America, Department of Genetics and Developmental Biology, University of Connecticut Health Center, Farmington, Connecticut, United States of America

Juan C. Salazar

jsalaza@ccmckids.org

Affiliations Department of Pediatrics, University of Connecticut Health Center, Farmington, Connecticut, United States of America, Division of Infectious Diseases, Connecticut Children's Medical Center, Hartford, Connecticut, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ARC JDR JCS. Performed the experiments: ARC AP LGR RT CV LJ. Analyzed the data: ARC AP AVZ JED MDFG RJ RT CV LJ DLC JDR JCS. Contributed reagents/materials/analysis tools: GEA DLC JCS. Wrote the paper: ARC JCS. Co-wrote the paper: ARC. Performed all molecular studies at the CDC: AP. Recruited patients: AVZ. Trained syphilis network physicians: JED. Contributed epidemiological data: GEA. Histology analysis: MDFG. Read histopathology slides: RJ. Molecular studies at Walter Reed Army Research Institute: LJ.