PDF file - Department of Health and Ageing

National Notifiable Diseases Surveillance System, 2004
Annual report
Case defi nition – Campylobacteriosis
Only confirmed cases are reported.
Confirmed case: Requires isolation or detection
of Campylobacter species.
Campylobacteriosis
There were 15,008 notifi cations of campylobacteriosis
in Australia in 2004. Campylobacteriosis is
notifi able in all jurisdictions, except New South
Wales. The national rate of notifi cations in 2004
was 112 cases per 100,000 population; a marginal
decrease compared with the rate reported in 2003
(116 cases per 100,000 population). All jurisdictions
with the exception of Victoria reported decreases
in notifi cations, with South Australia reporting the
largest decrease (30%). Victoria reported a 12 per
cent increase in notifi cations, and had the highest
notifi cation rate in 2004 (127 cases per 100,000
population).
Monthly notifications of campylobacteriosis in 2004,
consistent with previous years (1999 to 2003), peaked
in the third quarter of the year in late winter/early
spring (Figure 15). In 2004, seven Campylobacter
related outbreaks were identified, of which four
were suspected to be foodborne. 4 These suspected
foodborne outbreaks occurred in an aged care facility,
restaurant and food takeaway settings.
Children aged 0–4 years had the highest notification
rate of campylobacteriosis (Figure 16). In this
age group notification rates were higher in males
(243 cases per 100,000 population) than in females
(175 cases per 100,000 population). The overall male
to female ratio, as in previous years, was 1.2:1.
Figure 16. Notification rates of campylobacteriosis,
Australia, 2004, by age group and sex
Rate per 100,000 population
300
250
200
150
100
50
0
0-4
5-9
10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80-84
85+
Cryptosporidiosis
Age group (years)
Case defi nitions – Cryptosporidiosis
Only confirmed cases are reported.
Confi rmed case: Requires detection of
Cryptosporidium oocytes.
Male
Female
Figure 15. Trends in notifications of
campylobacteriosis, Australia, 1999 to 2004, by
month of onset
Notificaitons
2000
1800
1600
1400
1200
1000
800
600
400
200
0
Jan Jul
1999
Jan
2000
Jul
Jan
2001
Jul
Jan
2002
Jul
Jan
2003
Month and year of onset
Jul
Jan
2004
Jul
In 2004, a total of 1,573 cases of cryptosporidiosis
were reported to NNDSS, a notifi cation rate of 8
cases per 100,000 population, which represents an
increase of 28 per cent on the 1,225 cases reported
in 2003.
New South Wales, the Northern Territory, Queensland,
and Victoria reported increases in cryptosporidiosis
notifications, with the largest increase in Queensland
(276%). The Northern Territory and Queensland had
notification rates above the national average at 57 and
16 cases per 100,000 population, respectively.
Fifty per cent of cryptosporidiosis cases notifi ed in
2004 were under the age of fi ve years. Compared
to 2003, the notifi cation rate in this age group
increased by 24 per cent in 2004. With a notifi cation
rate of 61 cases per 100,000 population, children
under the age of four years continue to have the
highest notifi cation rate of cryptosporidiosis. Within
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