1 Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO 80045, USA; Hospital Infantil de México Federico Gómez, Mexico City, Mexico. Electronic address: carlos.franco.paredes@gmail.com.
2 Laboratorio de Infectologia, Microbiología e Inmunología Clínicas, Unidad de Investigación en Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico.
3 Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO 80045, USA.
4 Committe on Tropical Medicine, Zoonoses and Travel Medicine, Colombian Association of Infectious Diseases, Bogota, Colombia; Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Colombia.
5 International Association of Immunization Managers, Washington, DC, USA; Department of Immunization and Vaccines, WHO, Geneva, Switzerland.