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Pamphlet
(pdf format)

HIV Infection in South Australia

HIV Infection 1985 - 30/09/06

In South Australia, 1034 individuals have been diagnosed with HIV infection, 934 (90%) males and 100 (10%) females. Of the males, 696 (75%) reported male-to-male sexual contact, 71 (7%) reported injecting drug use and 40 (4%) reported both risk factors. Heterosexual transmission was reported by 63 (63%) females diagnosed with HIV infection and 30 (30%) females reported injecting drug use (Table 1.1).

HIV Infection 01/01/06 - 30/09/06

Forty-three individuals have been notified with HIV infection so far this year (38 males, 5 females) (Table 1.2). Of the 38 males, 25 reported male-to-male sexual contact as their risk factor, one male reported male-to-male sexual contact and injecting drug use, five males reported heterosexual contact and two heterosexual males reported injecting drug use as their risk factor.

Heterosexual transmission

A total of 12 individuals (7 males, 5 females) identified as heterosexual (Table 1.2). Of the seven males, three males reported female partners from countries where HIV is predominately transmitted heterosexually and two males were either current or past injecting drug users.

HIV Infection 01/07/06 - 30/09/06

Twelve males were diagnosed with HIV infection during the third quarter. Of the twelve men, seven reported male-to-male sexual contact as their risk factor.

Newly acquired infections 01/01/06 - 30/09/06

Of the 38 males notified this year, 14 acquired their infection in the preceding 12 months. Thirteen of the 14 males reported male-to-male sexual contact as their risk factor, one male reported heterosexual contact and injecting drug use as their risk factor (Table 1.3).

Newly acquired infections 01/07/06 - 30/09/06

Of the 12 males diagnosed during the third quarter, 4 had acquired their infection in the preceding 12 months; three reported male-to-male sexual contact as their risk factor (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 01/07/06 - 30/09/06.

During the third quarter of 2006, 21707 screening tests were performed, 8962 (41%) on males, 12672 (58%) on females and 73 tests on individuals whose sex was unknown (Table 1.5).

Table 1.1 HIV infection detected in South Australia, 1985 - 30/09/06.
Exposure category by sex.

Exposure category	Male		Female		Total
Exposure category	No.	%	No.	%	No.	%
Homosexual contact	696	75	na	-	696	67
Homosexual contact/IDU	40	4	na	-	40	4
Heterosexual contact	29	3	31	31	60	6
Heterosexual overseas	47	5	32	32	79	8
IDU	71	7	30	30	101	9
Blood products	8	1	2	2	10	1
Other	5	1	3	3	8	1
Unknown	38	4	2	2	40	4
Total	934		100		1034

^{na not
applicable}

Table 1.2 HIV infection detected in South Australia, 01/07/06 - 30/09/06.
Exposure category by sex.

Exposure category	3rd Quarter 01/07/06 -30/09/06		Year to date 01/01/06 - 30/09/06
Exposure category	Male	Female	Male	Female
Homosexual	7	na	25	na
Homosexual/IDU	-	na	1	na
Heterosexual	-	-	2	1
Heterosexual/IDU	1	-	2	1
Heterosexual (overseas partner)	1	-	3	3
Other (overseas)	1	-	1	-
Not stated	2	-	4	-
Total	12	-	38	5

^{na not
applicable}

Table 1.3 Newly acquired HIV infection (incident cases¹)
01/07/06 - 30/09/06 and year to date. Exposure category by sex.

Exposure category	3rd Quarter 01/07/06 - 30/09/06		Year to date 01/01/06 - 30/09/06
Exposure category	Male	Female	Male	Female	Total
Homosexual	3	na	13	na	13
Heterosexual (overseas)	1	-	1	-	1
Total	4	-	14	-	14

    ^{na not
applicable

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

        preceding 12 months.}

Table 1.4 HIV infection in males in South Australia, 01/07/06 - 30/09/06 and year.
Case category by age at diagnosis.

Case category	2nd Quarter 01/07/06 - 30/09/06 Age group (years)			Year to date 01/01/06 - 30/09/06 Age group (years)
Case category	<25	25 - 39	≥40	<25	25 - 39	≥40
Newly acquired¹	-	1	3	1	9	4
Greater than 12 months²	-	1	2	-	3	5
Uncertain duration³	1	3	1	1	7	7
Known positive (overseas)	-	-	-	-	-	1
Total	1	5	6	2	19	17

1 Incident case - negative serology 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, 01/07/06 - 30/09/06.
Laboratory by sex.

Laboratory	2nd Quarter 01/07/06 - 30/09/06			Year to date 01/01/06 - 30/09/06
Laboratory	Male	Female	Unknown	Male	Female	Unknown	Total
Public	5846	7913	65	19001	25294	265	44560
Private	3116	4759	8	9275	14093	49	23417
Total	8962	12672	73	28276	39387	314	67977

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