Depending on geographic location, different viruses cause viral meningitis. In some areas, arthropod borne viruses are important.
With new diagnostic methods, more of these cases are being given a specific aetiology.
Very unusual. Some small studies have suggested that early enterovirus meningitis linked to later language problems. Deafness is debatable – some large studies have not found any cases, yet antenatal infections and subclinical viral infections are felt to be causes for deafness in other clinical situations!