Table 3

Table 3. Aetiology of encephalitis and clinical data of patients studied between 1985 and 1994

Aetiology Retrospective series
1985-89 Prospective series
1990-94 Total series

HSV-1

9

8

17

VZV

2

7

9

HSV-2

1

0

1

Adenovirus

1

2

3

Influenza B

2

2

4

Rotavirus

1

1

2

Mycoplasma

1

1

2

TBE-virus

2

0

2

Puumala

0

1

1

Cryptoccosis

0

1

1

Rubellavirus

1

1

2

Unknown (% of all)

12 (37.5%)

21 (47%)

33 (43%)

Total

32

45

77

Age, years

42.3 ±15.3

40.8 ± 16.3

n.s.¹

Education, years

11.2 ± 4.0

11.0 ± 3.9

n.s.¹

Acyclovir latency, days

3.6 ± 5.3

3.5 ± 4.5

n.s.¹

Hospital stay, days

41.2 ± 44.9

33.0 ± 32.8

n.s.¹

Aetiology	Retrospective series 1985-89	Prospective series 1990-94	Total series
HSV-1	9	8	17
VZV	2	7	9
HSV-2	1	0	1
Adenovirus	1	2	3
Influenza B	2	2	4
Rotavirus	1	1	2
Mycoplasma	1	1	2
TBE-virus	2	0	2
Puumala	0	1	1
Cryptoccosis	0	1	1
Rubellavirus	1	1	2
Unknown (% of all)	12 (37.5%)	21 (47%)	33 (43%)
Total	32	45	77
Age, years	42.3 ±15.3	40.8 ± 16.3		n.s.¹
Education, years	11.2 ± 4.0	11.0 ± 3.9		n.s.¹
Acyclovir latency, days	3.6 ± 5.3	3.5 ± 4.5		n.s.¹
Hospital stay, days	41.2 ± 44.9	33.0 ± 32.8		n.s.¹

1 statistically non-significant difference, Student’s t test