| [epidemiologic study of an outbreak of echovirus type-9 meningitis]. | several agents are able to produce lymphocytic meningitis, but sometimes it's not possible their identification. the viruses are the etiological agents more frequently found, especially enteroviruses, mumps virus and herpes simplex virus, with different epidemiological patterns depending on time and geographic location. most of the infections caused by enteroviruses are asymptomatics. in general the viral meningitis have a good prognostic with an acute benign course and serious signs of neurolog ... | 1994 | 7618039 |