Hepatitis B Medical Notification 01/07/06 - 30/09/06
During
the third quarter of 2006, 79 hepatitis B medical notifications were
received. There was only one
acute clinical case of hepatitis B infection reported this quarter (Table
3.1). Nine notifications were reports of chronic carriers of greater than
twelve months duration who had been previously diagnosed but not notified
(Table 3.1).
Reports of antigen positivity of uncertain duration accounted for 67 cases
(Table 3.1).
The exposure category for the acute clinical case was not identified (Table 3.2).
Of
the 67 reports of antigen positivity of uncertain duration, 38 tested
surface antigen positive for the first time this quarter, eight were
previous positive but had not been notified and the testing history was
unknown for the remaining 21 cases.
Among the 38
individuals who tested surface antigen positive for the first time, but
were not acute cases, the racial origin of 14 (37%) was reported as Asian.
Of those reported as ‘Other’, 10 (26 %) 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, 01/07/06 - 30/09/06 and year to date.
Case category by sex.
|
Case category |
3rd Quarter
01/07/06 - 30/09/06 |
Year to date
01/01/06- 30/09/06 |
|
Male |
Female |
Male |
Female |
Total |
|
Acute infection |
1
|
-
|
2
|
-
|
2
|
|
Infection <12 months
duration |
1
|
1
|
1
|
2
|
3
|
|
Antigen positive-
uncertain duration |
41
|
26
|
110
|
80
|
190
|
|
Chronic carriers-
>12
months duration |
5
|
4
|
18
|
12
|
30
|
|
Total |
48
|
31
|
131
|
94
|
225
|
Table
3.2
Acute hepatitis B infection, 01/07/06 - 30/09/06 and year to date.
Age group by sex.
|
Exposure category |
3rd Quarter
01/07/06 - 30/09/06 |
Year to date
01/01/06- 30/09/06 |
|
Male |
Male |
Total |
|
IDU
|
-
|
1
|
1
|
|
None identified
|
1
|
1
|
1
|
|
Total |
1
|
2
|
2
|
Table 3.3
Hepatitis B infection, 01/07/06 - 30/09/06 and year to date.
Age group by sex.
|
Age group(years) |
3rd Quarter
01/07/06 - 30/09/06 |
Year to date
01/01/06- 30/09/06 |
|
Male |
Female |
Male |
Female |
Total |
|
<10
|
-
|
1
|
-
|
4
|
4
|
|
10-19
|
5
|
1
|
14
|
7
|
21
|
|
20 – 29
|
16
|
10
|
39
|
30
|
69
|
|
30 – 39
|
15
|
8
|
45
|
29
|
74
|
|
40 – 49
|
6
|
3
|
15
|
9
|
24
|
|
³ 50
|
6
|
8
|
18
|
15
|
33
|
|
Total |
48
|
31
|
131
|
94
|
225
|
Table 3.4
Individuals who tested hepatitis B surface
antigen positive for the
first time, 01/07/06 - 30/09/06 and year to date.
Race by sex.
|
Racial origin |
3rd Quarter
01/07/06 - 30/09/06 |
Year to date
01/01/06- 30/09/06 |
|
Male |
Female |
Male |
Female |
Total |
|
Aboriginal |
4
|
1
|
6
|
4
|
10
|
|
Asian |
5
|
9
|
19
|
21
|
40
|
|
Caucasian |
4
|
1
|
11
|
5
|
16
|
|
Other/unknown |
11
|
3
|
31
|
20
|
51
|
|
Total |
24
|
14
|
67
|
50
|
117
|
Table 3.5
Summary of hepatitis B surface antigen
tests, 01/07/06 - 30/09/06
and year to date. Laboratory by sex.
|
Laboratory |
3rd Quarter
01/07/06 - 30/09/06 |
Year to date
01/01/06- 30/09/06 |
|
Male |
Female |
Unknown |
Male |
Female |
Unknown |
Total |
|
Public |
5425
|
8132
|
12
|
16448
|
24731
|
66
|
41245
|
|
Private |
2319
|
4039
|
-
|
6170
|
10956
|
-
|
17126
|
|
Total |
7744
|
12171
|
12
|
22618
|
35687
|
66
|
58371
|
|
Health
on the Net Code of Conduct for health-related sites