摘要：In 1997 there were 89,579 notifications to the National Notifiable Diseases Surveillance System. Anotable feature of 1997 was the pertussis outbreak which peaked towards the end of the year andresulted in 10,668 cases being notified. The highest number of notifications received was forhepatitis C (unspecified) with 19,692 notifications; this is the first year for which data have bee nreported for New South Wales and South Australia for this disease category. The number ofmeasles cases rose after the low number reported in 1996 but is still well below the numberreported in the outbreak years of 1993 and 1994. Rubella notifications continued to decline in1997. Notifications of Haemophilus influenzae type b appeared to have stabilised at a low rate,having declined markedly after introduction of the conjugated vaccine in 1992. The number ofcases of campylobacteriosis remained steady after having risen for several years. Notifications ofhepatitis A cases rose considerably, much of this being due to one outbreak in New South Wales.The number of cases of salmonellosis rose while shigellosis numbers dropped slightly.Notifications for chlamydial infection and gonococcal infection continued to rise, whilst those forsyphilis continued to fall
