HIV notifications data

This page contains data on HIV cases within Australia, including the proportion of late and advanced diagnoses. The data are provided by The Kirby Institute for infection and immunity in society, which is funded by the Department of Health to maintain the National HIV Registry. The Kirby Institute must be acknowledged for its provision of the data in any published work.

Page last updated: 14 April 2014

Table 1. Number of new HIV diagnoses notified in Australia, cumulative to 31 December 2013, by month and year of HIV diagnosis

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
<=2002 2193 1952 1986 1771 1980 2285 1945 1958 1895 1943 2014 1747 23669
2003 75 75 76 86 74 78 66 74 66 73 78 55 876
2004 76 92 91 67 62 86 65 63 78 81 80 73 914
2005 69 77 88 88 100 86 59 80 89 85 89 64 974
2006 68 97 99 58 94 77 76 77 86 85 113 87 1017
2007 87 104 89 79 115 74 80 98 70 76 91 89 1052
2008 82 98 87 82 103 85 84 85 63 102 75 68 1014
2009 83 86 83 101 82 94 106 74 94 84 98 81 1066
2010 81 102 100 97 91 89 90 82 89 75 84 74 1054
2011 75 113 99 96 112 98 93 96 88 92 88 90 1140
2012 96 120 125 84 104 83 107 121 99 132 104 78 1253
2013 93 101 99 106 107 105 107 111 101 116 107 83 1236
Total 3078 3017 3022 2715 3024 3240 2878 2919 2818 2944 3021 2589 35265

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Late and advanced HIV diagnoses

Timely diagnosis of HIV infection can reduce an individual’s risk of morbidity and mortality, and have public health benefits by providing opportunities to reduce onward transmission, through mitigation of risk behaviours or commencing treatment to reduce infectivity.

These outcomes are monitored by measuring the proportion of HIV cases which are (i) diagnosed late, and (ii) diagnosed with advanced HIV.

A late diagnosis is indicated by a CD4+ cell count below 350 and suggests the infection was acquired around 4-5 years earlier. The CD4+ cell count reflects the level of circulating lymphocytes that are key components of the immune system.

Advanced HIV is when the CD4+ cell count falls below 200, a level which can lead to Acquired Immunodeficiency Syndrome (AIDS), a disease characterised by opportunistic infections and cancers that are rare in people with normal immune systems.

Table 2. Proportion of new HIV notifications diagnosed as “late” (i.e. with a CD4+ cell count below 350) in Australia, cumulative to 31 December 2013, by month and year of HIV diagnosis

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
2013 33% 36% 34% 31% 28% 26% 46% 45% 39% 41% 49% 43% 37%

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Table 3. Proportion of new HIV notifications diagnosed as “advanced” (i.e. with a CD4+ cell count below 200) in Australia, cumulative to 31 December 2013, by month and year of HIV diagnosis

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
2013 18% 21% 15% 11% 17% 11% 20% 26% 20% 18% 23% 26% 19%

For further information on these tables please contact:
Surveillance and Evaluation Program for Public Health
The Kirby Institute for infection and immunity in society
University of New South Wales
Sydney 2052 Australia

Telephone: +61 2 9385 0900
Facsimile: +61 2 9385 0920
Email: The Kirby Institute
Website: The Kirby Institute for infection and immunity in society

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