|
Hepatitis
B Medical Notification 01/10/06 - 31/12/06
During
the fourth quarter of 2006, 80 hepatitis B medical notifications were
received. Of these, two were acute clinical cases of hepatitis B
infection (Table
3.1).
A further nine 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
69 cases (Table
3.1).
The exposure categories for the two acute
clinical cases following investigation were unable to be identified (Table 3.2).
Of
the 69 reports of antigen positivity of uncertain duration, 51 had no
previous testing history, one was a previous positive of greater than 12
months duration and not previously notified and one had a previous
negative test of greater than 12 months duration.
The testing history was unknown for the remaining cases 16.
Among
the 52 individuals who tested surface antigen positive for the first time,
but were not acute cases, the racial origin of 21 (40%) was reported as
Asian and 19 (37%) 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,
01/10/06 - 31/12/06 and year.
Case category by sex.
|
Case category |
4th
Quarter
01/10/06 - 31/12/06
|
Year
01/01/06 - 31/12/06
|
|
Male |
Female |
Male |
Female |
Total |
|
Acute
infection |
1
|
1
|
3
|
1
|
4
|
Antigen positive -
< 12 months duration |
-
|
-
|
1
|
2
|
3
|
|
Antigen positive-
uncertain duration |
39
|
30
|
149
|
105
|
254
|
|
Chronic
carriers-
>12
months duration |
7
|
2
|
33
|
21
|
54
|
|
Total |
47
|
33
|
186
|
129
|
315
|
Table 3.2
Acute hepatitis
B infection, year.01/10/06 - 31/12/06 and year.
Exposure category by sex.
| Exposure category
|
4th
Quarter
01/10/06 - 31/12/06 |
Year
01/01/06 - 31/12/06
|
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
IDU
|
-
|
-
|
1
|
-
|
1
|
|
Tattoos
|
-
|
-
|
1
|
-
|
1
|
|
None identified
|
1
|
1
|
1
|
1
|
2
|
|
Total
|
1
|
1
|
3
|
1
|
4
|
Table
3.3
Acute hepatitis
B infection, 01/10/06 - 31/12/06 and year.
Age group by sex.
|
Age group (years)
|
4th
Quarter
01/10/06 - 31/12/06 |
Year
01/01/06 - 31/12/06 |
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
20 - 29
|
-
|
1
|
-
|
1
|
1
|
|
30 - 39
|
1
|
-
|
2
|
-
|
2
|
|
40 - 49
|
-
|
-
|
1
|
-
|
1
|
|
Total
|
1
|
1
|
3
|
1
|
4
|
Table
3.4
Individuals who
tested hepatitis B surface antigen positive
for the first time, 01/10/06 - 31/12/06 and year. Race by sex.
|
Racial origin
|
4th
Quarter
01/10/06 - 31/12/06
|
Year
01/01/06 - 31/12/06
|
|
Male
|
Female
|
Male
|
Female
|
Total
|
|
Aboriginal
|
-
|
-
|
9
|
5
|
14
|
|
Asian
|
9
|
12
|
28
|
33
|
61
|
|
Caucasian
|
7
|
3
|
18
|
8
|
26
|
|
African
|
13
|
6
|
38
|
22
|
60
|
|
Other/Unknown
|
1
|
1
|
8
|
5
|
13
|
|
Total
|
30
|
22
|
101
|
73
|
174
|
Table
3.5
Summary of
hepatitis B surface antigen tests, 01/10/06 - 31/12/06
and year.
Laboratory by sex.
|
Laboratory
|
4th
Quarter
01/10/06 - 31/12/06
|
Year
01/01/06 - 31/12/06
|
|
Male
|
Female
|
Unknown
|
Male
|
Female
|
Unknown
|
Total
|
|
Public
|
5439
|
7987
|
27
|
21887
|
32718
|
93
|
54698
|
|
Private
|
2837
|
4601
|
-
|
9007
|
15557
|
-
|
24564
|
|
Total
|
8276
|
12588
|
27
|
30894
|
48275
|
93
|
79262
|
|
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