Table 1. Number of new HIV diagnoses notified in Australia, cumulative to 31 December 2017, by month and year of HIV diagnosis
Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1984-2006 | 2,474 | 2,287 | 2,329 | 2,058 | 2297 | 2611 | 2198 | 2242 | 2202 | 2243 | 2354 | 2009 | 27304 |
2007 | 81 | 94 | 77 | 70 | 109 | 62 | 72 | 84 | 64 | 72 | 82 | 81 | 948 |
2008 | 78 | 88 | 79 | 69 | 85 | 76 | 76 | 72 | 55 | 95 | 69 | 59 | 901 |
2009 | 73 | 80 | 68 | 90 | 70 | 84 | 90 | 64 | 83 | 79 | 86 | 78 | 945 |
2010 | 71 | 84 | 83 | 81 | 79 | 73 | 78 | 73 | 79 | 66 | 75 | 66 | 908 |
2011 | 67 | 95 | 84 | 84 | 97 | 85 | 79 | 84 | 83 | 76 | 75 | 73 | 982 |
2012 | 78 | 103 | 109 | 74 | 86 | 70 | 88 | 104 | 85 | 109 | 95 | 65 | 1066 |
2013 | 74 | 81 | 77 | 83 | 94 | 88 | 94 | 96 | 90 | 95 | 94 | 66 | 1032 |
2014 | 105 | 96 | 98 | 84 | 91 | 84 | 97 | 81 | 94 | 88 | 80 | 86 | 1084 |
2015 | 81 | 80 | 80 | 84 | 74 | 81 | 105 | 81 | 85 | 87 | 96 | 92 | 1026 |
2016 | 106 | 93 | 85 | 88 | 89 | 82 | 74 | 93 | 89 | 98 | 59 | 57 | 1013 |
2017 | 88 | 76 | 75 | 81 | 92 | 82 | 83 | 78 | 69 | 89 | 80 | 70 | 963 |
Monthly Total | 3376 | 3257 | 3244 | 2946 | 3263 | 3478 | 3134 | 3152 | 3078 | 3197 | 3245 | 2802 | 38172 |
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 2017, by month and year of HIV diagnosis
Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2017 | 32% | 37% | 35% | 37% | 54% | 30% | 33% | 34% | 36% | 29% | 41% | 29% | 36% |
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 2017, by month and year of HIV diagnosis
Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2017 | 22% | 22% | 21% | 18% | 28% | 21% | 22% | 23% | 32% | 22% | 21% | 20% | 23% |
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