1. Centro de Investigación en Salud para el Trópico (CIST), Universidad Cooperativa de Colombia, Santa Marta, Colombia;
2. Department of Biology, Baylor University, Waco, Texas;
3. Department of Pediatrics, Texas Children’s Hospital Center for Vaccine Development, National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas;
4. Division of Infectious Diseases, University of Colorado Denver, School of Medicine, Aurora, Colorado;
5. Hospital Infantil de México, Federico Gómez, México City, México