[Meningitis and encephalitis in Poland in 2000].

A total of 2,033 cases of meningitis and 570 of encephalitis were reported in Poland in 2000. Among cases of meningitis 1,051 (51.7%) were classified as viral and 982 (48.3%) as bacterial. Etiological factors were determined in 36.7% (360/982) cases of bacterial meningitis. Neisseria meningitidis, Haemophilus influenzae, and Streptococcus pneumoniae were found in 10.3% (101/982), 8.7% (85/982), and 7.5% (74/982) cases, respectively. As in previous years, N. meningitidis typed B was strongly predominating. Out of 570 cases of encephalitis, 170 (29.8%) were tick borne, of which most were reported from endemic areas of north-eastern part of the country.