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Dive into the research topics where Jack Bradley is active.

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Featured researches published by Jack Bradley.


Aids and Behavior | 2009

Gay men who engage in group sex are at increased risk of HIV infection and onward transmission.

Garrett Prestage; Jeff Hudson; Ian Down; Jack Bradley; Nick Corrigan; Michael Hurley; Andrew E. Grulich; David McInnes

Among 746 participants in the Three or More Study (TOMS) of gay men who engaged in group sex in the previous 6 months, 22.4% reported unprotected anal intercourse (UAI) with any partners they did not know to be the same HIV serostatus as themselves. Not knowing oneself to be HIV-negative, not having a clear intention to use condoms, and more frequent group sex were independently associated with UAI. This study shows that gay men who engage in group sex represent an important priority for targeted HIV prevention activities and research.


PLOS ONE | 2013

Increased HIV Testing Will Modestly Reduce HIV Incidence among Gay Men in NSW and Would Be Acceptable if HIV Testing Becomes Convenient

Richard Gray; Garrett Prestage; Ian Down; Muhammad Haris Ghaus; Alexander Hoare; Jack Bradley; David Wilson

Objective Determine the acceptability and epidemiological impact of increases in HIV testing in gay men in New South Wales (NSW), Australia– particularly pertinent when considering treatment as prevention and the need to reduce undiagnosed infections. Methods We conducted an online survey and focus groups to assess whether increases in HIV testing would be acceptable to gay men in NSW. In parallel, we assessed the potential impact of increases in testing coverage and/or frequency using an individual-based model of HIV transmission. Results If sexual practices and the rate of initiating HIV treatment are unchanged then increasing HIV testing reduces infections. Increasing testing frequency has the largest impact, with a 13.8% reduction in HIV infections over 10 years if the ∼55–75% of men who test at least once per year increased their testing frequency to four times per year. If testing levels decrease from current levels then we expect an increase in HIV infections with a sharply rising trend over time. Increasing HIV testing would be acceptable if testing was more convenient. However, only ∼25% of men surveyed were ‘very likely’ to increase their level of HIV testing. Men delayed or avoided testing due to the slowness in obtaining results and if they believed they had not put themselves at risk. Conclusions An increase in HIV testing alone is unlikely to reduce HIV incidence substantially in NSW gay men– however, the relatively high testing levels need to continue to prevent an increase in HIV infections. In jurisdictions with lower levels of HIV testing, increases in testing coverage and frequency are likely to have a larger impact. Successful treatment as prevention interventions will require increases in testing rates; such increases would be acceptable to gay men in NSW but only if more convenient testing and rapid communication of results were available.


The Lancet HIV | 2017

Effect of availability of HIV self-testing on HIV testing frequency in gay and bisexual men at high risk of infection (FORTH): a waiting-list randomised controlled trial

Muhammad Jamil; Garrett Prestage; Christopher K. Fairley; Andrew E. Grulich; Kirsty S. Smith; Marcus Y. Chen; Martin Holt; Anna McNulty; Benjamin R. Bavinton; Damian P. Conway; Handan Wand; Phillip Keen; Jack Bradley; Johann Kolstee; Colin Batrouney; Darren Russell; Matthew Law; John M. Kaldor; Rebecca Guy

BACKGROUND Frequent testing of individuals at high risk of HIV is central to current prevention strategies. We aimed to determine if HIV self-testing would increase frequency of testing in high-risk gay and bisexual men, with a particular focus on men who delayed testing or had never been tested before. METHODS In this randomised trial, HIV-negative high-risk gay and bisexual men who reported condomless anal intercourse or more than five male sexual partners in the past 3 months were recruited at three clinical and two community-based sites in Australia. Enrolled participants were randomly assigned (1:1) to the intervention (free HIV self-testing plus facility-based testing) or standard care (facility-based testing only). Participants completed a brief online questionnaire every 3 months, which collected the number of self-tests used and the number and location of facility-based tests, and HIV testing was subsequently sourced from clinical records. The primary outcome of number of HIV tests over 12 months was assessed overall and in two strata: recent (last test ≤2 years ago) and non-recent (>2 years ago or never tested) testers. A statistician who was masked to group allocation analysed the data; analyses included all participants who completed at least one follow-up questionnaire. After the 12 month follow-up, men in the standard care group were offered free self-testing kits for a year. This trial is registered with the Australian New Zealand Clinical Trials Registry, number ACTRN12613001236785. FINDINGS Between Dec 1, 2013, and Feb 5, 2015, 182 men were randomly assigned to self-testing, and 180 to standard care. The analysis population included 178 (98%) men in the self-testing group (174 person-years) and 165 (92%) in the standard care group (162 person-years). Overall, men in the self-testing group had 701 HIV tests (410 self-tests; mean 4·0 tests per year), and men in the standard care group had 313 HIV tests (mean 1·9 tests per year); rate ratio (RR) 2·08 (95% CI 1·82-2·38; p<0·0001). Among recent testers, men in the self-testing group had 627 tests (356 self-tests; mean 4·2 per year), and men in the standard care group had 297 tests (mean 2·1 per year); RR 1·99 (1·73-2·29; p<0·0001). Among non-recent testers, men in the self-testing group had 74 tests (54 self-tests; mean 2·8 per year), and men in the standard care group had 16 tests (mean 0·7 per year); RR 3·95 (2·30-6·78; p<0·0001). The mean number of facility-based HIV tests per year was similar in the self-testing and standard care groups (mean 1·7 vs 1·9 per year, respectively; RR 0·86, 0·74-1·01; p=0·074). No serious adverse events were reported during follow-up. INTERPRETATION HIV self-testing resulted in a two times increase in frequency of testing in gay and bisexual men at high risk of infection, and a nearly four times increase in non-recent testers, compared with standard care, without reducing the frequency of facility-based HIV testing. HIV self-testing should be made more widely available to help increase testing and earlier diagnosis. FUNDING The National Health and Medical Research Council, Australia.


Culture, Health & Sexuality | 2009

The discourse of gay men's group sex: the importance of masculinity

David McInnes; Jack Bradley; Garrett Prestage

Group sex has consistently been identified as one of a group of risk behaviours among gay men associated with HIV seroconversion. This paper presents a detailed description of how gender, and specifically masculinity, operates as an aspect of the discourse of gay mens group sex. The findings presented in this paper are one part of a multi-aspected discourse analysis through which we are aiming to develop an account of the discourse of gay mens group sex as it was produced in a series of qualitative interviews conducted with gay men who participate in group sex. The interviews were conducted as part of the Three or More Study (TOMS), a larger project that involved a substantial quantitative component. The overarching intent of the discourse analysis is to provide as comprehensive a mapping as possible of this discursive terrain to facilitate the targeted development of HIV and sexual health educational initiatives. The discourse of gay mens group sex reproduces some key formations of masculinity within discourses of gender, which present specific challenges for HIV prevention education. These challenges are outlined at the conclusion of this paper.


International Journal of Drug Policy | 2017

Following Lives Undergoing Change (Flux) study: Implementation and baseline prevalence of drug use in an online cohort study of gay and bisexual men in Australia

Mohamed Hammoud; Fengyi Jin; Louisa Degenhardt; Toby Lea; Lisa Maher; Jeffrey Grierson; Brent Mackie; Marcus Pastorelli; Colin Batrouney; Nicky Bath; Jack Bradley; Garrett Prestage

BACKGROUND Drug use among gay and bisexual men (GBM) is higher than most populations. The use of crystal methamphetamine, erectile dysfunction medication (EDM), and amyl nitrite have been associated with sexual risk behaviour and HIV infection among gay and bisexual men (GBM). OBJECTIVE This paper describes an online prospective observational study of licit and illicit drug use among GBM and explores baseline prevalence of drug use in this sample. Capturing these data poses challenges as participants are required to disclose potentially illegal behaviours in a geographically dispersed country. To address this issue, an entirely online and study specific methodology was chosen. METHODS Men living in Australia, aged 16.5 years of age or older, who identified as homosexual or bisexual or had sex with at least one man in the preceding 12 months were eligible to enrol. RESULTS Between September 2014 and July 2015, a total of 2250 participants completed the baseline questionnaire, of whom, 1710 (76.0%) consented to six-monthly follow-up. The majority (65.7%) were recruited through Facebook targeted advertising. At baseline, over half (50.5%) the men reported the use of any illicit drug in the previous six months, and 28.0% had used party drugs. In the six months prior to enrolment, 12.0% had used crystal methamphetamine, 21.8% had used EDM, and 32.1% had used amyl nitrite. Among the 1710 men enrolled into the cohort, 790 men had used none of these drugs. CONCLUSION Ease of entry and minimal research burden on participants helped ensure successful recruitment into this online cohort study. Study outcomes will include the initiation and cessation of drug use, associated risk behaviours, and health consequences, over time. Results will provide insights into the role gay community plays in patterns of drug use among GBM.


Sexual Health | 2012

Increasing gay men’s testing rates and enhancing partner notification can reduce the incidence of syphilis

Ian Down; David Wilson; Pol Dominic McCann; Richard Gray; Alexander Hoare; Jack Bradley; Basil Donovan; Garrett Prestage

BACKGROUND We sought to determine whether gay men would be willing to increase syphilis testing and partner notification, and assessed the possible epidemiological impact these changes might have in the Australian population. METHODS We conducted an online survey (n=2306) and focus groups to determine whether interventions to increase testing for syphilis and enhanced partner notification are likely to be acceptable to gay men in Australia. An individual-based mathematical model was developed to estimate the potential population-level impact of changes in these factors. RESULTS Of all men surveyed, 37.3% felt they should test more frequently for sexually transmissible infections. Men who recent unprotected anal intercourse with casual partners and men who reported a higher number of partners were more likely to indicate a greater willingness to increase testing frequency. HIV-positive men were more likely to indicate that their frequency of syphilis testing was adequate, incorporated as part of their regular HIV monitoring. Lack of convenience was the main barrier reported. Partner notification was broadly acceptable, although perceived stigma presented a potential barrier. The mathematical model indicated that increasing testing rates would have a substantial impact on reducing rates of syphilis infection among gay men and partner notification would further reduce infections. CONCLUSIONS Interventions promoting testing for syphilis among gay men and increases in partner notification may be acceptable to gay men and are likely to result in decreased infection rates. Rapid testing and modern communication technologies could strengthen these interventions, and have an impact on the syphilis epidemic.


Sexual Health | 2014

Recently diagnosed gay men talk about HIV treatment decisions

Ian Down; Garrett Prestage; Kathy Triffitt; Graham Brown; Jack Bradley; Jeanne Ellard

UNLABELLED Background In recent years, there has been increasing evidence that early initiation of antiretroviral therapy (ART) may provide health benefits for those infected with HIV. There has also been significant discussion about the role of HIV treatment in preventing onward transmission of the virus. Early provision and uptake of ART to people recently diagnosed with HIV could achieve both individual and public health outcomes. The success of such an initiative relies, in part, on the preparedness of those recently diagnosed with HIV to engage with the therapy. METHODS The HIV Seroconversion Study collects both quantitative and qualitative data from people in Australia who have recently been diagnosed with HIV. During 2011-2012, 53 gay or bisexual men recruited across Australia took part in semistructured interviews as part of the study. The men were asked about their knowledge and experience of, and their decisions about whether or not to commence, HIV treatment. RESULTS The interviews identified differing levels of knowledge about HIV treatments and divergent views about the health and prevention benefits of ART. For some, treatments provided a sense of control over the virus; others were apprehensive and distrustful, and preferred to resist commencing treatments for as long as possible. CONCLUSIONS If early initiation of treatment is to be encouraged, appropriate measures must be in place to ensure recently diagnosed individuals have access to the appropriate information and the support they need to enable them to make informed choices and, if necessary, to address their fears.


Sexually Transmitted Diseases | 2011

Will Changes in Gay Menʼs Sexual Behavior Reduce Syphilis Rates

Richard Gray; Alexander Hoare; Pol Dominic McCann; Jack Bradley; Ian Down; Basil Donovan; Garrett Prestage; David Wilson

Background: Reducing rates of partner change and increasing condom usage among gay men are obvious targets for potentially reducing syphilis transmission among gay men. Methods: We developed an agent-based stochastic model to examine syphilis transmission among a population of gay men, representative of gay men in Australia. This model was used to explore the potential impact of changes in sexual behavior over 1 month, 3 month, and indefinite time frames on syphilis epidemics. Results: Simulations of interventions showed that short-term reductions in rates of partner change and increased condom use would have negligible impact on the long-term trends of syphilis epidemics. If no interventions are introduced, then the model forecasts that the syphilis prevalence in the population could continue to rise, with an increase of 80% in the number of men infected with syphilis during the next decade. However, if changes in sexual behavior are maintained in the long-term, then syphilis epidemics can be mitigated. If condom use is sustained at 80% in partnerships that are HIV discordant or of unknown status, then the prevalence of syphilis is estimated to decrease by 9% over 10 years. Similarly, if partner acquisition rates decrease by 25%, then there will be a 22% reduction in syphilis prevalence. Conclusions: Interventions promoting partner reduction or increased condom use would be ineffective in the short-term, and would have limited prospects for success in the long-term unless very large changes in behavior are sustained. Complementary social research indicates that such long-term changes in behavior are unlikely to be adopted, and therefore other intervention strategies need to be developed to reduce syphilis among gay men.


Sexually Transmitted Diseases | 2011

Would gay men change their sexual behavior to reduce syphilis rates

Pol Dominic McCann; Richard Gray; Alexander Hoare; Jack Bradley; Ian Down; Basil Donovan; David Wilson; Garrett Prestage

Background: The community at which public health strategies for reducing syphilis epidemics are potentially targeted may have different considerations with regards to their sexual and health priorities. We aimed to elicit information on the acceptability of behavior change interventions among gay men for reducing syphilis transmission. Methods: We conducted an online survey (n = 2306 participants) and focus groups to determine whether further sexual behavior change to reduce syphilis is likely to be acceptable to gay men in Australia. Results: One quarter of survey respondents (26%) indicated that they would be highly likely to reduce partner acquisition rates in order to reduce their chances of syphilis infection. However, among the 475 (21%) men who reported greater than 10 partners in the previous 6 months, only 11% indicated being “highly likely” to reduce partner numbers to avoid syphilis. Among 606 (26%) survey respondents who reported not always using condoms in the previous 6 months, 34% indicated being highly likely to always use condoms with casual partners to avoid syphilis. In the focus groups, men indicated little commitment to sexual behavior change but some willingness to consider short-term changes to reduce community syphilis levels. Conclusions: Interventions promoting partner reduction or increased condom use are unlikely to be adopted on a long-term basis by men at greatest risk. Behavioral interventions alone are unlikely to materially contribute to syphilis prevention among gay men.


Culture, Health & Sexuality | 2011

Responsibility, risk and negotiation in the discourse of gay men's group sex

David McInnes; Jack Bradley; Garrett Prestage

Responsibility for the practise of (un)safe sex, for taking or not taking risks in relation to HIV transmission and for the negotiation of (safe) sex have been concerns in HIV-prevention research for a long time. This paper presents the findings of a discourse analysis of interview texts collected as part of the Three or More Study. We examine what, in the discourse examined, constrains and enables ‘response-ability’ – the capacity to respond to others and ones self in light of the complex contingencies that operate to enliven sexual contexts. We identify three key aspects of these sexual contexts that impact on response-ability: that there is an absence of ‘explicit’ (verbally communicated) negotiation and the presence of action-perception links, which are understood as forms of negotiation; that some sexual contexts appear to involve the passivity of participants to the sexual event, interaction or to other men, but that there is agency in and as part of this passivity; and that there exists a social obligation to being individually responsible for sexual decision making, including the taking of risks.

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Ian Down

University of New South Wales

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Andrew E. Grulich

University of New South Wales

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Benjamin R. Bavinton

University of New South Wales

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Damian P. Conway

University of New South Wales

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Martin Holt

University of New South Wales

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