Table 1 Treponema pallidum testing and CSF characteristics in individuals with a retrospectively definite or probable neurosyphilis divided according to HIV status

CSF cell count in cells/µl (mean/range)

87 (1–511)

23

32 (4–165)

15

9 (0–33)

11

9 (1–50)

16

n.a.

1

n.a.

1

CSF Protein in mg/dl (mean/range)

129 (40–928)

23

86 (14–437)

15

145 (23–650)

11

43 (25–60)

16

1

n.a.

1

Albumin quotient in (mean/range)

12 (3.2–31.4)

20

8.4 (2.7–15.9)

14

6.1 (3.1–15.7)

11

6.4 (3.6–10.7)

14

n.a.

3

n.a.

1

n.a.

1

n.a.

3

Oligoclonal bands in CSF

pos.

11

pos.

8

pos.

9

pos.

6

neg.

8

neg.

5

neg.

2

neg.

8

n.a.

4

n.a.

2

n.a.

1

n.a.

3

Serum RPR (median/range)

1:32 (1:1–1:1024)

21

1:16 (1:2–1:512)

13

1:32 (1:4–1:128)

11

1:16 (1:2–1:256)

14

2 neg.

2 neg.

1 neg.

2 neg.

CSF RPR (median/range)

1:8 (1:8–1:512)

5

1:2/1:4 (1:1–1:4)

4

neg.

12

neg.

16

neg.

18

neg.

11

pos.

1

ITPA index (mean/range)

4.1 (0–30.9)

21

5 (0.1–15.2)

13

0.9 (0–5.8)

12

1 (0.1–3.7)

16

n.a.

2

n.a.

2

n.a.

1

CD4 cell count in cells/µl (mean/range)

333 (60–780)

18

–

–

320 (41–611)

10

–

–

n.a.

5

n.a.

2