1 Department of Medicine, Division of Infectious Diseases, and Department of Health Policy, Vanderbilt University Medical Center, Nashville, Tennessee.
2 Division of Infectious Diseases, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada.
3 Division of Communicable Disease Control, California Department of Public Health, Richmond.
4 Infectious Diseases Department, French Institute for Public Health Surveillance, Saint-Maurice.
5 Infectious Diseases Department, CHU and University 1, Grenoble, France.
6 Warren Alpert Medical School of Brown University, Providence, Rhode Island.
7 Johns Hopkins Encephalitis Center, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland.