1. Microbiology,1 and
2. Departments of Pediatrics2and
3. Microbiology and Immunology3 and
4. Elizabeth B. Lamb Center for Pediatric Research,4 Vanderbilt University School of Medicine, Nashville, Tennessee 37232
5. Departments of Neurology,5
6. Medicine,6
7. Immunology,7 University of Colorado Health Sciences Center, and
8. Neurology Service, Denver Veterans Affairs Medical Center,8 Denver, Colorado 80220, and