The epidemiology of tuberculosis in the Australia Capital Territory, 2006-2015.

AIM: To review the epidemiology of tuberculosis (TB) in the Australian Capital Territory (ACT) over a 10 year period. Methods: A retrospective analysis of the ACT TB notification data from 1 January 2006 to 31 December 2015 was conducted. RESULTS: Over the 10 year study period there were 171 TB notifications in the ACT, with an increasing trend in the number of notifications over time. The median age of cases was 36 years (range 14 to 91 years) and 53.8% of cases were male. Most TB cases (84.2%) were born overseas. Among Australian-born cases the most common risk factor for acquiring TB was close/household contact with a known case of TB (30.8%). The most common risk factor in the overseas-born population was past travel or residence in a high-risk country (86.9%). Of all the TB cases notified, 82.4% successfully completed treatment. CONCLUSION: There was an increasing trend in the number of TB notifications in the ACT over the study period. The highest rate of TB notifications remained in the overseas-born population; with other studies suggesting this is commonly due to reactivation of latent tuberculosis infection (LTBI). As Australia starts working towards TB elimination, options for the screening and management of LTBI, especially in high risk populations, need to be explored.

Toponymous diseases of Australia.

Names are more than just labels used to identify diseases. They can be windows into the discovery, characteristics and attributes of the disease. Toponymous diseases are diseases that are named after places. Hendra, Ross River, Bairnsdale, Murray Valley and Barmah Forest are all examples of Australian places that have had diseases named after them. They all have unique and interesting stories that provide a glimpse into their discovery, history and culture. Because of perceived negative connotations, the association of diseases with placenames has sometimes generated controversy.

The changing phases of pandemic (H1N1) 2009 in Queensland: an overview of public health actions and epidemiology.

A graded public health response was implemented to control the pandemic (H1N1) 2009 outbreak in Queensland. Public health measures to contain the outbreak included border control, enhanced surveillance, management of cases and contacts with isolation or quarantine and antivirals, school closures and public education messages. The first confirmed case in Australia was notified on 8 May 2009, in a traveller returning to Queensland from the United States. In Queensland, 593 laboratory-confirmed cases were notified with a date of onset between 26 April and 22 June 2009, when the Protect phase of the Australian Health Management Plan for Pandemic Influenza was implemented; 16 hospitalisations and no deaths were reported during this time. The largest number of confirmed cases was reported in the 10-19-years age group (167, 28% of cases), followed by the 20-29-years age group (153, 26% of cases). With ongoing community transmission, the focus has shifted from public health to the clinical domain, with an emphasis on protecting vulnerable groups. Considerable resources have been invested to prevent and control the spread of disease in Indigenous communities in Far North Queensland. The capacity of clinical services to cope with increased admissions, the potential for widespread antiviral resistance, and rollout of mass vaccination campaigns remain future challenges.

Characteristics of HIV diagnoses in Australia, 1993-2006.

OBJECTIVE: To describe recent trends in the diagnosis of HIV infection in Australia. METHODS: National HIV surveillance data from 1993 to 2006 were analysed with a focus on geographic differences by HIV exposure route and late presentation (HIV within 3 months of a first AIDS-defining illness or a CD4 count of less than 200 cells muL(-1)). RESULTS: In 1993-99, the number of HIV diagnoses declined by 32%, and then increased by 39% from 1999 to 2006. From 2000 onwards, rates increased significantly in Victoria, Queensland, South Australia and Western Australia. The most frequently reported routes of HIV exposure were male to male sex (71%) and heterosexual contact (18%), and the population rate of diagnoses have increased in both categories. Among the cases reported as heterosexually acquired (n = 2199), 33% were in people born in a high-prevalence country and 19% in those with partners from a high-prevalence country. Late presentation was most frequent in heterosexually acquired infections in persons who had a partner from a high-prevalence country: 32% compared with 20% overall. CONCLUSIONS: Recent increases in annual numbers of HIV diagnoses in Australia underline the continuing need for HIV-prevention programs, particularly among men having male to male sex. Early diagnosis and access to care and treatment should also be emphasised, as a substantial proportion of people with HIV infection are unaware of their status until late in the course of disease.

HIV diagnoses in Australia: diverging epidemics within a low-prevalence country.

OBJECTIVE: To describe recent trends in the diagnosis of HIV infection in Australia. DESIGN AND SETTING: Analysis of national surveillance system data for 1993-2006. MAIN OUTCOME MEASURES: Number and population rate of new HIV diagnoses by year, exposure route and demographic characteristics. RESULTS: Between 1993 and 2006, 12 313 new diagnoses of HIV infection were reported in Australia. From 1993 to 1999, the annual number of diagnoses declined by 32% from 1056 to 718, and then increased by 31% from 763 in 2000 to 998 in 2006. Between 2000 and 2006, diagnosis rates significantly increased in Victoria, Queensland, South Australia and Western Australia. The most frequent route of HIV exposure was male-to-male sex, accounting for 70% of diagnoses. Heterosexual contact accounted for 18% of cases, with just over half of these people born in or having a sexual partner from a high-prevalence country. Exposure by injecting drug use remained infrequent. CONCLUSIONS: The number of HIV diagnoses has risen in the past 7 years, but not in New South Wales, which has long had the highest rates. The differences in rates between states/territories are likely to be due to divergent trends in sexual risk behaviour in men having male-to-male sex, which remains the predominant route of HIV transmission in Australia. There is a need for effective, innovative and evidence-based programs for HIV prevention, particularly among men having male-to-male sex.