[Results from an epidemiologic study program of meningitis/encephalitis in Berlin, I: 1 January 1992-31 March 1994].

Although four types of meningitis/encephalitis must be reported by the Federal Communicable Disease Act since 1980, the incidence of etiologically not identified cases is constant over the years. We report on the first results in 1097 patients with meningitis who were examined by microbiological methods. These examinations were free of charge for the clinics in Berlin.