“Possible LNB”

(n = 44)

“Not determined”

(n = 55)

Age, years, median (range)

7 (1 - 18)

12 (2 - 18)

Male, n (%)

20 (45)

26 (47)

Known tick bite, n (%)

26 (59)

31 (56)

Duration of symptoms, n (%)

<1 week

26 (59)

21 (38)

1 - 4 weeks

16 (36)

15 (27)

1 - 2 months

2 (5)

8 (15)

>2 months

0 (0)

11 (20)

Major clinical manifestations, n (%)^a

Facial nerve palsy

34 (77)

20 (36)

Headache

26 (59)

40 (73)

Meningitis, subacute

20 (45)

6 (11)

EM and/or lymfocytoma

23 (52)

3 (5)

Laboratory findings, n (%)

Pleocytosis in CSF, median (range)^b

68 (5 - 575)

1 (0 - 4)

Anti-Borrelia antibodies in CSF, n (%)^c

0 (0)

0 (0)

Anti-Borrelia antibodies in serum, n (%)^d

Anti-IgM

12 (27)

6 (11)

Anti-IgG

3 (7)

2 (4)

Anti-IgM and IgG

9 (20)

6 (11)

Antibiotic treatment, n (%)

Ceftriaxone, iv

21 (48)

0 (0)

Doxycycline, po

23 (52)

3 (5)