HIV Infection in South Australia
HIV Infection 1985 - 31/12/05
In South Australia, 992 individuals have been diagnosed with HIV
infection, 897 (90%) males and 95 (10%) females.
Of the males, 673 (75%) reported male-to-male sexual contact, 69
(8%) reported injecting drug use and 39 (4%) reported both risk factors.
Heterosexual transmission was reported by 59 (63%) females diagnosed with
HIV infection, 29 (31%) females reported injecting drug use
(Table
1.1).
HIV Infection 01/01/05 - 31/12/05
Fifty-one individuals have been notified with HIV infection this year (47
males, 4 females)
(Table 1.2).
Of the 47 males, 32 reported male-to-male sexual contact as their risk
factor, two reported male-to-male sexual contact and injecting drug use,
10 males reported heterosexual contact and two heterosexual males reported
injecting drug use as their risk factor.
Heterosexual
transmission
A total of
14 individuals (12 males, 2 females) identified as heterosexual
(Table
1.2).
Of the 12 males, seven reported female partners from
countries where HIV is predominately transmitted heterosexually and two
were either current or past injecting drug users.
HIV Infection 01/10/05 - 31/12/05
Eleven males were diagnosed with HIV infection
during the fourth quarter. Of
the 11 men, six reported male-to-male sexual contact as their risk factor,
one male reported male-to-male sexual contact and injecting drug use, two
males reported sexual contact with females partners from countries where
HIV infection is predominately transmitted heterosexually
(Table 1.2).
Newly acquired
infections 01/01/2005 - 31/12/05
Of the 47 males notified this year, 16 acquired
their infection in the preceding 12 months.
Fifteen males reported male-to-male sexual contact as their risk
factor, and one male reported sexual contact with female partners from
countries where HIV infection is predominately transmitted heterosexually (Table 1.3).
Laboratory Screening For HIV Infection 01/10/05 - 31/12/05
During the fourth quarter of
2005, 21754 screening tests were performed, 9283 (43%) on males, (57%) on
females and nine tests on individuals whose sex was not reported (Table 1.5).
Table 1.1
HIV infection
detected in South Australia, 1985 - 31/12/05.
Exposure category by sex.
|
Exposure
category
|
Male
|
Female
|
Total
|
|
No.
|
%
|
No.
|
%
|
No.
|
%
|
|
Homosexual
|
673
|
75
|
na
|
|
673
|
68
|
|
Homosexual/IDU
|
39
|
4
|
na
|
|
39
|
4
|
|
Heterosexual
|
27
|
3
|
30
|
32
|
57
|
6
|
|
Heterosexual (overseas)
|
44
|
5
|
29
|
31
|
73
|
7
|
|
IDU
|
69
|
8
|
29
|
31
|
98
|
10
|
|
Blood
products
|
8
|
1
|
2
|
2
|
10
|
1
|
|
Other
|
4
|
1
|
3
|
3
|
7
|
1
|
|
Unknown
|
33
|
3
|
2
|
1
|
35
|
3
|
|
Total
|
897
|
|
95
|
|
992
|
|
na
not applicable
Table 1.2
HIV infection detected in South Australia, 01/10/05 - 31/12/05
and year.
Exposure category by sex.
|
Exposure category
|
4th Quarter
01/10/05 - 31/12/05
|
Year
01/01/05 - 31/12/05
|
|
Male
|
Female
|
Male
|
Female
|
|
Homosexual
|
6
|
na
|
32
|
na
|
|
Homosexual/IDU
|
1
|
na
|
2
|
na
|
|
Heterosexual
contact
|
1
|
-
|
3
|
-
|
|
Heterosexual
(overseas)
|
2
|
1
|
7
|
2
|
|
Heterosexual/IDU
|
-
|
-
|
2
|
1
|
|
Not stated/other
|
1
|
1
|
1
|
1
|
|
Total
|
11
|
2
|
47
|
4
|
na
not applicable
Table 1.3
Newly acquired infections (Incident cases*) of HIV, 01/10/05 - 31/12/05
and year.
Exposure category by sex.
|
Exposure
category
|
4th
Quarter
01/10/05 - 31/12/05
|
Year
01/01/05 - 31/12/05
|
|
Male
|
Female
|
Male
|
Female
|
|
Homosexual
|
2
|
na
|
15
|
na
|
|
Homosexual/IDU
|
-
|
na
|
-
|
na
|
|
Heterosexual
(overseas)
|
-
|
-
|
1
|
-
|
|
Total
|
2
|
-
|
16
|
-
|
*
Incident
case
- negative serology or diagnosed seroconversion illness in the preceding
12 months.
na
not applicable
Table
1.4 HIV
infection in males in South Australia, 01/10/05 - 31/12/05
and
year.
Case category by age at diagnosis.
|
Case
category
|
4th
Quarter
01/10/05 - 31/12/05
|
Year
01/01/05 - 31/12/05
|
|
Age group
(years)
|
Age group
(years)
|
|
<25
|
25
- 39
|
³40
|
<25
|
25
- 39
|
³40
|
|
Newly
acquired1
|
-
|
1
|
1
|
2
|
9
|
5
|
|
Greater
than 12 months2
|
-
|
2
|
1
|
-
|
6
|
5
|
|
Uncertain
duration3
|
-
|
2
|
4
|
1
|
9
|
10
|
|
Total
|
|
5
|
6
|
3
|
24
|
20
|
1
Incident case - negative serology in the preceding 12 months or diagnosed
seroconversion illness in the
preceding
12 months.
2
Infection likely to be greater than 12 months - risk behaviour confined to
more than 12 months ago or
diagnosed
seroconversion illness more than 12 months ago.
3
Uncertain duration - tested for the first time this year and no
seroconversion illness or AIDS defining illness
present.
Table 1.5 Summary
of HIV antibody tests, 01/10/05 - 31/12/05 and year.
Laboratory by sex.
|
Laboratory
|
4th
Quarter
01/10/05 - 31/12/05
|
Year
01/01/05 - 31/12/05
|
|
Male
|
Female
|
Unknown
|
Male
|
Female
|
Unknown
|
Total
|
|
Public
|
5790
|
7549
|
9
|
24239
|
31800
|
229
|
56268
|
|
Private
|
3493
|
4913
|
-
|
15015
|
20143
|
5
|
35163
|
|
Total
|
9283
|
12462
|
9
|
39254
|
51943
|
234
|
91431
|
|
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