Selected National Notifiable Diseases Surveillance System reports, and historical data 1 1. The historical data are the averages of the number of notifications in the corresponding 4 week periods of the last 3 years and the 2 week periods immediately preceding and following those . Not Notifiable 1. No notification of poliomyelitis has been received since 1986.
Totals comprise data from all States and Territories.
Cumulative figures are subject to retrospective revision, so there may be discrepancies between the number of new notifications and the increment in the cumulative figure from the previous period. The total number of measles notifications for 1998 has been revised downwards because of a reclassification of 79 cases previously notified as measles by Victoria. These cases have been reclassified as not measles following results of serology. Includes congenital rubella. Notifications of diseases received by State and Territory health authorities in the period 18 August to 16 September 1998 .