Among 267 patients with central nervous system infections, 43 patients (16.1%) suffered from purulent bacterial meningitis. An etiological agent was established in 15 cases (34.9%): Str. pneumoniae--9 cases, N. meningitidis--4 cases and Staph. aureus--2 cases. Most patients had severe course of the disease; lethality was 18.6%, the recovery with subsequent sequelae was noted in 11.6% cases, and 69.8% cases fully recovered. In two patients brain abscess and intracranial empyema, and persistent cerebral ischaemia were found, one of these patients died. Frequent use of antibiotics before hospitalization reduces the possibility of establishing the etiological agent. Bacterial infections of the central nervous system are still danger diseases producing high lethality and subsequent neurological sequelae.