1. Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, California, USA
2. Saint Louis University, St. Louis, Missouri, USA
3. Department of Paraclinical Sciences, General Sir John Kotelawala Defense University, Ratmalana, Sri Lanka
4. National Virology Laboratory, National Center for Diagnosis and Reference, Ministry of Health, Managua, Nicaragua
5. Sustainable Sciences Institute, Managua, Nicaragua
6. Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, California, USA
7. Department of Medicine, Division of Infectious Diseases and Global Public Health, University of California, San Diego, La Jolla, California, USA