[The role of anaerobic bacteria in meningeal infections (author's transl)].

The finding is described of a Gram-negative bacterium in cerebrospinal fluid of a patient suffering from internal hydrocephalus and taken in the hospital of Udine with symptoms of meningitis. The isolated bacterium belongs to the genus Bacteroides. The cases of meningitis are indicated in which the bacteriological examination of the cerebrospinal fluid for anaerobes is recommended.