Accepted for Publication: December 10, 2012.
Published Online: June 3, 2013. doi:10.1001/jamaneurol.2013.2120
Acquisition of data: All authors.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Davis, Beckham, and Tyler.
Critical revision of the manuscript for important intellectual content: All
Statistical analysis: Beckham.
Obtained funding: Beckham and Tyler.
Administrative, technical, and material support: Davis, Beckham, and Tyler.
Study supervision: Davis and Beckham.
Conflict of Interest Disclosures: None
Funding/Support: Dr Beckham’s work is
supported by grant K08AI076518 from the National Institute of Allergy and Infectious Diseases
(NIAID) and grant U54AI065357 from the NIAID-supported Rocky Mountain Regional Center of Excellence
for Biodefense and Emerging Infectious Diseases Research. Dr Tyler’s work is supported by a
Veterans Affairs Merit award and grant R01NS076512 from the National Institutes of Health/National
Institute of Neurological Disorders and Stroke.
Additional Contributions: We thank Christina Marra, MD (University of Washington
School of Medicine, Seattle), for performing the cerebrospinal fluid polymerase chain reaction assay
for Treponema pallidum.