Related Pages

Statistics

Quarterly surveillance reports

Annual epidemiologic reports

Yearly STD summaries

Clinic 275 activity statistics

Statistics for...

 2007

Epidemiologic 

Report

Quarterly Surveillance Report

Vol. 2, No. 1, July 1996

Contents

HIV Infection in South Australia

Hepatitis C Surveillance in South Australia

Hepatitis B Surveillance in South Australia

Genital Chlamydial Infection in South Australia

Gonococcal Infection in South Australia

Syphilis in South Australia

List of Tables

Table 1.1  HIV infection detected in South Australia 1985 - 1995. Exposure category by sex

Table 1.2  HIV infection detected in South Australia 01/01/96 - 31/03/96. 
                   Exposure category by sex

Table 1.3  HIV infection detected in South Australia 01/01/96 - 31/03/96. 
                  Testing history by age at diagnosis of HIV infection

Table 1.4  Number of HIV antibody tests by laboratory and sex 01/01/96 - 31/03/96

Table 1.5  Characteristic of newly diagnosed infection (Australian HIV Surveillance Report
                   April 1996)

Table 1.6  World AIDS Cases (W.H.O.)

Table 2.1  Medical notifications for individuals who tested hepatitis C antibody positive
                  for the first time during the period 01/01/96 - 31/03/96. Exposure category by sex.

Table 2.2  Individuals who tested positive for hepatitis C infection for the first time.
                  Age group by sex

Table 2.3  Newly acquired infections in the previous 12 months. Exposure category by sex.

Table 2.4  Laboratory screening for hepatitis C infection by sex. 01/01/96 - 31/06/96

Table 3.1  Acute cases of hepatitis B infection during the period 01/01/96 - 31/03/96. 
                  Risk category by sex.

Table 3.2  Acute cases of hepatitis B infection during the period 01/01/96 - 31/03/96. 
                  Age group by sex

Table 3.3  Individuals who tested hepatitis B surface antigen positive for the first time 
                   during the period 01/01/96 - 31/03/96. Race by sex.

Table 3.4  Laboratory screening for hepatitis B Surface antigen by sex. 01/01/96 - 31/03/96

Table 4.1  Genital chlamydial infection in South Australia 1989 - 1995. 
                  Year of diagnosis by sex.

Table 4.2  Genital chlamydial infection in South Australia 01/01/96 - 31/03/96. 
                  Age group by sex

Table 4.3  Laboratory testing for genital chlamydia in South Australia 01/01/96 - 31/03/96

Table 5.1  Gonococcal infection in South Australia 1989 - 1995. Year of diagnosis by sex.

Table 5.2  Gonococcal infection in South Australia 01/01/96 - 31/03/96. Age group by sex

Table 6.1  Syphilis in South Australia 1989 - 1995. Year of diagnosis by sex

HIV INFECTION IN SOUTH AUSTRALIA

 HIV Infection 1985 - 1995

There have been 602 individuals diagnosed with HIV infection, 558 (93%) in males and 44 (7%) in females (Table 1.1). Of the males diagnosed, 75% (418) reported male to male sexual contact, 9% (52) reported injecting drug use and 5% (26) reported both risk factors. Injecting drug use was reported by 50% (22) of the women diagnosed with HIV infection and 38% (17) reported heterosexual transmission.

HIV Infection 01/01/96 - 31/03/96

Eleven men have been diagnosed with HIV infection in the first quarter of this year. Of the 11 men, 8 reported male to male sexual contact as their risk factor and 1 male reported heterosexual contact (Table 1.2). Five men (Table 1.3) reporting male to male sexual contact had acquired their infection in the preceding 12 months (defined by a negative HIV antibody test in the preceding 12 months prior to diagnosis).

Laboratory Screening For HIV Infection 01/01/96 - 31/03/96

There have been 20341 screening tests performed, 8759 (43%) tests were performed on males, 11312 (56%) on females and 17 tests were performed on individuals whose sex was unknown (Table 1.4).

Table 1.5 Characteristic of newly diagnosed infection
(Australian H.I.V Surveillance Report April 1996)
Characteristics of cases of newly diagnosed HIV infection 1986-1995 Number of cases, mean age, and percent of total cases for each year by sex, state/territory, and exposure category.
(Australian HIV Surveillance Report Vol 12, Number 2 April 1996)

1. Proportion of mlaes amoung cases who sex was reported

2. The "Other/undetermined" category was excluded from the calculation of the percentage of cases attributed to each exposure category

Table 1.6 World AIDS Cases (W.H.O.)

Cumulative AIDS Cases reported to World Health Organisation (W.H.O.) by Continent and year. (W.H.O. Global programme on AIDS), based on reports received up to 29/12/1994

HEPATITIS C SURVEILLANCE IN SOUTH AUSTRALIA

Hepatitis C Medical Notification 1 January 1996 - 31 March 1996

Laboratories reported 595 individuals who tested positive for Hepatitis C infection in the first quarter of 1996, 533 (90%) individuals were notified by medical practitioners. Of the 533 medical notifications received, 206 (39%) individuals reported never having a test, 197 (37%) had previously tested positive for Hepatitis C, 28 (5%) individuals reported a previous negative test result and information on testing history was unavailable for 102 (19%) individuals. Of the 28 individuals with a previous negative test 4 were incident cases (defined by a negative test or acute clinical illness in the preceding 12 months).

Of the 336 individuals who tested positive for Hepatitis C infection for the first time in 1996, 203 individuals (60%) reported past and/or present history of injecting drug use, 32 (10%) reported blood transfusion/blood products as their only risk factor, tattoos accounted for 6% (20) and unknown exposure category accounted for 20% (71) of the infections reported (Table 2.1).

A high proportion of individuals were aged between 30 - 39 years (45% of men, 41% of women) (Table 2.2).

There have been 4 individuals who acquired the infection in the preceding 12 months (defined by a negative hepatitis C test in the 12 months prior to diagnosis or diagnosed acute illness) (Table 2.3). None of the incident cases reported an acute illness involving jaundice within the last 12 months.

There have been 14817 screening tests performed 7172 (48%) on males 7627 (51%) on females 18 tests were performed on individuals whose sex was unknown (Table 2.4).

*includes those individuals whose exposure category is IDU, IDU/tattoos, IDU/tattoos/blood transfusion and IDU/blood transfusion.

HEPATITIS B SURVEILLANCE IN SOUTH AUSTRALIA

Hepatitis B medical notification 1 January 1996 - 31 March 1996

During the first quarter of 1996, 76 Hepatitis B medical notifications were received. Of these, 3 were acute cases of Hepatitis B infection (Tables 3.1, 3.2), 16 were carriers of greater than twelve months duration and 57 were individuals who tested surface antigen positive for the first time in this quarter.

Of the 57 individuals who tested surface antigen positive for the first time, the racial origin of a high proportion (67%) was reported as being Asian (Table 3.3).

Table 3.4 shows the number of Hepatitis B surface antigen tests performed by laboratories for this quarter.

GENITAL CHLAMYDIAL INFECTION IN SOUTH AUSTRALIA

Genital Chlamydial Infection 1989 - 1995

There have been 7178 cases of genital chlamydial infection notified between 1 January 1989 and 31 December 1995 (Table 4.1). Of these 7178 cases, 2676 (37%) occurred in males and 4502 (63%) occurred in females (Table 4.1).

Genital Chlamydial Infection 1 January 1996 - 31 March 1996

Between 1 January 1996 and 31 March 1996, 202 cases of genital chlamydial infection have been notified. 85% (171/202) of genital chlamydia occurred in individuals aged under 30 years of age (Table 4.2).

5937 tests were performed on women and 1823 on men between 1 January 1996 and 31 March 1996 (Table 4.3). The yield from testing was 37 cases/1000 men tested and 29 cases/1000 women tested.

GONOCOCCAL INFECTION IN SOUTH AUSTRALIA

Gonococcal Infection 1989 - 1995

Between 1 January 1989 and 31 December 1995, 1297 cases of gonococcal infection have been reported. Gonorrhoea infection occurred in 71% (926/1297) of men and 29% (371/1297) of women (Table 5.1).

Gonococcal Infection 1 January 1996 - 31 March 1996

Between January 1996 and 31 March 1996, 36 cases of gonococcal infection have been notified.

In males, cases occurred across a wide age range whilst in females all cases notified were under 34 years of age (Table 5.2).

SYPHILIS IN SOUTH AUSTRALIA

Syphilis 1989 - 1995

Between 1 January 1989 and 31 December 1995, 462 cases of infectious syphilis (201 in males and 261 in females) have been notified (Table 6.1).

Syphilis 1 January 1996 - 31 March 1996

Five cases of infectious syphilis were notified during the reporting period.

All data in this report are provisional and subject to future revision.

The STD Control Branch Quarterly Surveillance Report is produced by the STD Control Branch, Public and Environmental Health Service, South Australian Health Commission.

STD Control Branch
PO Box 6
Rundle Mall SA 5000
Australia

Facsimile:+61 (8) 82266560

Email:STD.Services@dhs.sa.gov.au

Contributors:

Dr Russell Waddell
Ms Tess Davey
Ms Julie Silvers
Ms Monica Winter

Ms Tammy Wilson

Dr Christopher Miller

Top of Page