1 Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. kevinskma1@gmail.com.
2 Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA.
3 Divisions of Hospital Medicine and Infectious Disease, Department of Pediatrics, Mass General for Children, Harvard Medical School, Boston, MA, USA.
4 Transplant and Immunocompromised Host Infectious Diseases Unit, Infectious, Diseases Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
5 Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA. jonathan.mansbach@childrens.harvard.edu.