|
Hepatitis
B Medical Notification 01/10/07 - 31/12/07
During
the fourth quarter of 2007, 116 hepatitis B medical notifications were
received. Of these, four were
acute clinical cases of hepatitis B infection (Table
3.1).
A further 48 were reports of chronic carriers of greater than
twelve months duration, who had been previously diagnosed, but not
recorded on the current notification system
(Table
3.1).
Reports of antigen positivity of uncertain duration accounted for
64 cases
(Table
3.1).
The exposure categories for the four acute
clinical cases (2 males, 2 females) were injecting drug use (2), tattoos
(1) and none identified (1) (Table 3.2).
Of
the 64 reports of antigen positivity of uncertain duration, 48 had no
previous testing history and the testing history was unknown for the
remaining 16 cases.
Among
the 48 individuals who tested surface antigen positive for the first time,
but were not acute cases, the racial origin of 18 (38%) was reported as
Asian and 16 (33%) were of African origin (Table 3.4).
The
number of hepatitis B surface antigen tests performed by laboratories for
this quarter is shown in Table
3.5.
Table
3.1 Hepatitis B infection, 01/10/07 - 31/12/07 and year to
date.
Case category by sex.
|
Case category |
4th
Quarter
01/10/07 - 31/12/07
|
Year
01/01/07 - 31/12/07
|
|
Male |
Female |
Male |
Female |
Total |
|
Acute
infection |
2
|
2
|
5
|
6
|
11
|
|
Antigen positive-
uncertain duration |
37
|
27
|
178
|
140
|
318
|
|
Chronic
carriers-
>12
months duration |
25
|
23
|
91
|
100
|
191
|
|
Total |
64
|
52
|
274
|
246
|
520
|
Table 3.2
Acute hepatitis
B infection, year.01/10/07 - 31/12/07 and year to date.
Exposure category by sex.
| Exposure category
|
4th
Quarter
01/10/07 - 31/12/07 |
Year
01/01/07 - 31/12/07
|
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
IDU
|
1
|
1
|
2
|
2
|
4
|
|
Tattoos
|
1
|
-
|
1
|
-
|
1
|
|
Homosexual
contact
|
-
|
-
|
1
|
-
|
1
|
|
Heterosexual
contact
|
-
|
-
|
-
|
1
|
1
|
|
Overseas
travel
|
-
|
-
|
1
|
1
|
2
|
|
None identified
|
-
|
1
|
-
|
2
|
2
|
|
Total
|
2
|
2
|
5
|
6
|
11
|
Table
3.3
Acute hepatitis
B infection, 01/10/07 - 31/12/07 and year to date.
Age group by sex.
|
Age group (years)
|
4th
Quarter
01/10/07 - 31/12/07 |
Year
01/01/07 - 31/12/07 |
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
20 - 29
|
-
|
1
|
1
|
3
|
4
|
|
30 - 39
|
1
|
-
|
1
|
1
|
2
|
|
40 - 49
|
-
|
1
|
1
|
1
|
2
|
|
>50
|
1
|
-
|
2
|
1
|
3
|
|
Total
|
2
|
2
|
5
|
6
|
11
|
Table
3.4
Individuals who
tested hepatitis B surface antigen positive
for the first time, 01/10/07 - 31/12/07 and year to date. Race by sex.
|
Racial origin
|
4th
Quarter
01/10/07 - 31/12/07
|
Year
01/01/07 - 31/12/07
|
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
Aboriginal
|
-
|
1
|
9
|
4
|
13
|
|
Asian
|
12
|
6
|
48
|
64
|
112
|
|
Caucasian
|
6
|
2
|
18
|
9
|
27
|
|
African
|
8
|
8
|
51
|
26
|
77
|
|
Other/Unknown
|
3
|
2
|
1
|
1
|
2
|
|
Total
|
29
|
19
|
137
|
112
|
249
|
Table
3.5
Summary of
hepatitis B surface antigen tests, 01/10/07 - 31/12/07
and year to date.
Laboratory by sex.
|
Laboratory
|
4th
Quarter
01/10/07 - 31/12/07
|
Year
01/01/07 - 31/12/07
|
|
Male
|
Female
|
Unknown
|
Male
|
Female
|
Unknown
|
Total
|
|
Public
|
5424
|
7795
|
18
|
21706
|
32807
|
86
|
54599
|
|
Private
|
2943
|
4652
|
-
|
11775
|
19088
|
-
|
30863
|
|
Total
|
8370
|
12447
|
18
|
33481
|
51895
|
86
|
85462
|
|
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