Table 1.

Negative infectious disease workup in this patient.

1	Herpes simplex virus-1 and -2 PCR, CSF
2	Epstein-Barr virus PCR, CSF
3	Cytomegalovirus PCR, CSF
4	Mycobacterial stain and culture, CSF
5	Syphilis, CSF
6	Cryptococcus antigen, CSF
7	Histoplasma antigen, urine
8	HIV ELISA, serum
9	West Nile virus serology, CSF
10	Lymphocytic choriomeningitis virus serology, CSF
11	Coxsackievirus serology panel, CSF
12	Measles serology, CSF
13	Mumps serology, CSF
14	St. Louis encephalitis serology, CSF
15	Eastern/Western equine encephalitis serology, CSF
16	California encephalitis serology, CSF
17	Echovirus serology, CSF
18	Adenovirus serology, CSF
19	Influenza A/B antibody testing, nasopharyngeal swab

PCR, polymerase chain reaction; CSF, cerebrospinal fluid.