[Acute meningo-encephalitis in adolescents and adults--I. Germs, rate of morbidity and lethality (author's transl)].

Diverse forms of acute meningo-encephalitis found in adolescents and adults are discussed considering 1244 cases treated at the Neurologic Clinic of the University at Cologne in the time from 1950 till 1975. The rate of morbidity and lethality was found to vary according to the type of causative germ. The inflammation often took another course than in childhood. The age at the outbreak of the disease, infection immunity, precursing and concomitant illnesses as well as the onset of medication influence the outcome of the meningo-encephalitis.