Table 1 Microbiological findings in the patient groups.

	n	%
Causative bacterium
S pneumoniae	10	26.3
N meningitidis	11	28.9
S aureus	1	2.6
Streptococci	4	10.5
L monocytogenes	3	7.9
Unknown bacteria	9	23.7
Total	38	100
Causative virus
Varicella‐zoster virus	7	14.6
Mumps virus	3	6.3
Epstein‐Barr virus	3	6.3
Cytomegalovirus	1	2.1
Enterovirus*	2	4.2
Unknown virus	32	66.7
Total	48	100

*Enterovirus polymerase chain reaction was not routinely performed.