| viral meningitis due to echovirus types 6 and 9: epidemiological data from western australia. | during the autumn of 1992, western australia experienced a large viral meningitis outbreak of dual aetiology. of the 161 cases, 64% were children under 15 years of age, with the highest notification rate being in children less than 5 years of age. echovirus 9 caused 41% of cases and occurred mainly in the metropolitan areas of western australia whereas echovirus 6, which caused 37% of cases, was more widespread. an enterovirus was cultured from 70% of csf specimens, 88% of faecal specimens and 6 ... | 1996 | 8972676 |