Quarterly Surveillance Report 2005 No. 38: HIV Statistics

HIV Infection 1985 - 31/12/06

In South Australia, 1053 individuals have been diagnosed with HIV infection, 949 (90%) males and 104 (10%) females. Of the males, 702 (74%) reported male-to-male sexual contact, 72 (7%) reported injecting drug use and 44 (5%) reported both risk factors. Heterosexual transmission was reported by 66 (64%) females diagnosed with HIV infection, 31 (30%) females reported injecting drug use (Table 1.1).

HIV Infection 01/01/06 - 31/12/06

Sixty-one individuals have been notified with HIV infection this year (52 males, 9 females) (Table 1.2).

Of the 52 males, 31 reported male-to-male sexual contact as their risk factor, four reported male-to-male sexual contact and injecting drug use, five males reported heterosexual contact and three heterosexual males reported injecting drug use as their risk factor.

A total of 21 individuals (12 males, 9 females) identified as heterosexual (Table 1.2). Of the 12 males, four reported female partners from countries where HIV is predominately transmitted heterosexually and three were either current or past injecting drug users.

HIV Infection 01/10/06 - 31/12/06

Fifteen males were diagnosed with HIV infection during the fourth quarter. Of the 15 males, six reported male-to-male sexual contact as their risk factor, three males reported male-to-male sexual contact and injecting drug use, two males reported sexual contact with female partners from countries where HIV infection is predominately transmitted heterosexually (Table 1.2).

Newly acquired infections 01/01/2006 - 31/12/06

Of the 52 males notified this year,16 acquired their infection in the preceding 12 months. 14 males reported male-to-male sexual contact as their risk factor, one male reported male-to-male and injecting drug use and one male reported sexual contact with female partners from countries where HIV infection is predominately transmitted heterosexually (Table 1.3).

Newly acquired cases are infections acquired in the last 12 months, and are identified by negative serology in the preceding 12 months or diagnosed seroconversion illness in the preceding 12 months.

Laboratory Screening For HIV Infection 01/10/06 - 31/12/06

During the fourth quarter of 2006, 21012 screening tests were performed, 8736 (42%) on males, 12178 (58%) on females and 98 tests on individuals whose sex was not reported (Table 1.5)..

Table 1.1 HIV infection detected in South Australia, 1985 - 31/12/06.
Exposure category by sex.

Exposure category	Male		Female		Total
Exposure category	No.	%	No.	%	No.	%
Homosexual	702	74	na		702	66
Homosexual/IDU	44	5	na		44	4
Heterosexual	32	3	33	32	65	6
Heterosexual (overseas)	48	5	33	32	81	8
IDU	72	7	31	29	103	10
Blood products	8	1	2	2	10	1
Other	5	1	3	3	8	1
Unknown	38	4	2	2	40	4
Total	949		104		1053

Table 1.2 HIV infection detected in South Australia, 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
Exposure category	Male	Female	Male	Female
Homosexual	6	na	31	na
Homosexual/IDU	3	na	4	na
Heterosexual contact	1	2	5	3
Heterosexual (overseas)	2	1	4	2
Heterosexual/IDU	1	1	3	4
Not stated/other	2	-	5	-
Total	15	4	52	9

Table 1.3 Newly acquired infections (Incident cases*) of HIV, 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
Exposure category	Male	Male
Homosexual	2	14
Homosexual/IDU	-	1
Heterosexual (overseas)	1	1
Total	3	16

* Incident case - negative serology or diagnosed seroconversion illness in the preceding 12 months.

Table 1.4 HIV infection in males in South Australia, 01/10/06 - 31/12/06 and year.
Case category by age at diagnosis.

Case category	4th Quarter 01/10/06 - 31/12/06			Year 01/01/06 - 31/12/06
	Age group (years)			Age group (years)
	<25	25 - 39	³40	<25	25 - 39	³40
Newly acquired¹	1	1	1	2	9	5
Greater than 12 months²	-	4	2	-	8	7
Uncertain duration³	-	3	3	1	10	10
Total	1	8	6	3	27	22

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, 01/10/06 - 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	5912	7724		92	24913	33018		357	58288
Private	2824	4454		6	12099	18547		67	30713
Total	8736	12178		98	37012	51565		424	89001

Related Pages

HIV Infection in South Australia