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1.
AIDS ; 2024 Jun 21.
Article in English | MEDLINE | ID: mdl-38905495

ABSTRACT

OBJECTIVE: To identify groups more likely to be referred for HIV testing because of symptomatic presentation rather than as part of asymptomatic screening. DESIGN: A retrospective analysis of Australian National HIV Registry (NHR) surveillance data including sociodemographic and clinical data, as well as reasons for HIV test. METHODS: Using notification records from 2017 to 2022, we summarised reasons for testing leading to an HIV diagnosis. Reasons for testing were combined with clinical status at diagnosis to derive HIV testing categories: testing while symptomatic; asymptomatic HIV screening; seroconversion; and other test reason. We stratified these categories by stage of HIV at diagnosis with late-stage HIV defined as a CD4 count <350 cells/µL at time of diagnosis. RESULTS: Among 4,134 HIV notifications with at least one reason for testing recorded, STI screening was the predominant reason for test referral (38%), followed by HIV indicative symptoms (31%), and risk behaviour (13%). By testing category, people aged 50 years or older (24%), people with HIV attributed to heterosexual sex (21%), people born in Sub-Saharan Africa (19%), and women (17%) had lower levels of asymptomatic screening. More late-stage HIV diagnoses resulted from testing while symptomatic (58%) compared with asymptomatic screening (25%). CONCLUSIONS: Older people and heterosexuals may not access HIV focused healthcare where HIV screening is routinely offered. Instead, HIV testing opportunities may arise in other settings. By normalising HIV testing and offering low-cost HIV screening in a range of settings, it may be possible to facilitate earlier HIV diagnoses, better health outcomes, and reduced onward transmission.

2.
Viruses ; 16(6)2024 Jun 13.
Article in English | MEDLINE | ID: mdl-38932249

ABSTRACT

Hepatitis C (HCV) reinfection studies have not focused on primary healthcare services in Australia, where priority populations including people who inject drugs (PWID) typically engage in healthcare. We aimed to describe the incidence of HCV reinfection and associated risk factors in a cohort of people most at risk of reinfection in a real-world community setting. We conducted a secondary analysis of routinely collected HCV testing and treatment data from treatment episodes initiated with direct-acting antiviral (DAA) therapy between October 2015 and June 2021. The overall proportion of clients (N = 413) reinfected was 9% (N = 37), and the overall incidence rate of HCV reinfection was 9.5/100PY (95% CI: 6.3-14.3). Reinfection incidence rates varied by sub-group and were highest for Aboriginal and/or Torres Strait Islander people (20.4/100PY; 95% CI: 12.1-34.4). Among PWID (N= 321), only Aboriginality was significantly associated with reinfection (AOR: 2.73, 95% CI: 1.33-5.60, p = 0.006). High rates of HCV reinfection in populations with multiple vulnerabilities and continued drug use, especially among Aboriginal and Torres Strait Islander people, highlight the need for ongoing regular HCV testing and retreatment in order to achieve HCV elimination. A priority is resourcing testing and treatment for Aboriginal and/or Torres Strait Islander people. Our findings support the need for novel and holistic healthcare strategies for PWID and the upscaling of Indigenous cultural approaches and interventions.


Subject(s)
Hepatitis C , Primary Health Care , Reinfection , Substance Abuse, Intravenous , Humans , Male , Female , Risk Factors , Adult , Substance Abuse, Intravenous/complications , Substance Abuse, Intravenous/epidemiology , Hepatitis C/epidemiology , Hepatitis C/drug therapy , Australia/epidemiology , Reinfection/epidemiology , Middle Aged , Incidence , Antiviral Agents/therapeutic use , Hepacivirus/drug effects , Native Hawaiian or Other Pacific Islander/statistics & numerical data , Young Adult
3.
Cult Health Sex ; : 1-16, 2024 May 17.
Article in English | MEDLINE | ID: mdl-38756104

ABSTRACT

In 2022, a global outbreak of mpox (formerly 'monkeypox') emerged in non-endemic countries, including Australia, predominantly affecting gay, bisexual and other men who have sex with men. Public health advice on transmission and isolation emerged rapidly from different sources, sometimes conflicting and producing uncertainty. Using the concept of 'counterpublic health', which acknowledges the incorporation of official science and experiences of affected communities into embodied practice, this paper investigates how people affected by mpox in Australia managed risk of transmission and navigated self-isolation. In-depth interviews were conducted with 16 people: 13 people diagnosed with mpox and three close contacts. All participants were cisgender gay and bisexual men living in Australia. Participants thought critically about public health advice, often finding it restrictive and unresponsive to the needs of people with mpox. Participants' decisions about reducing mpox risk and isolating often drew on experiences with other infections (i.e. HIV; COVID-19) and were made collaboratively with the people closest to them (e.g. partners, friends, family) to sustain relationships. Future public health responses to infectious disease outbreaks would benefit from identifying more opportunities to formalise and embed mechanisms to obtain feedback from affected communities so as to inform responses.

4.
Med J Aust ; 220(7): 381-386, 2024 Apr 15.
Article in English | MEDLINE | ID: mdl-38479437

ABSTRACT

INTRODUCTION: Doxycycline post-exposure prophylaxis (doxy-PEP) involves consuming 200 mg of doxycycline up to 72 hours after a condomless sex act to reduce the risk of bacterial sexually transmitted infections (STIs). Recent clinical trials of doxy-PEP have demonstrated significant reductions in syphilis, chlamydia and, to a lesser degree, gonorrhoea among gay, bisexual and other men who have sex with men (GBMSM). There is a high level of interest in doxy-PEP in the GBMSM community and, in response, the Australasian Society for HIV, Viral Hepatitis and Sexual Health Medicine (ASHM) held a national consensus conference with the aim of creating preliminary guidance for clinicians, community, researchers and policy makers. MAIN RECOMMENDATIONS: There was broad agreement that doxy-PEP should be considered primarily for the prevention of syphilis in GBMSM who are at risk of this STI, with a secondary benefit of reductions in other bacterial STIs. At the end of the consensus process, there remained some disagreement, as some stakeholders felt strongly that doxy-PEP should be considered only for the prevention of syphilis in GBMSM, and that the risk of increasing antimicrobial resistance outweighed any potential benefit from reductions in other bacterial STIs in the target population. The national roundtable made several other recommendations for clinicians, community, researchers and policy makers, as detailed in this article. ASHM will support the development of detailed clinical guidelines and education materials on doxy-PEP (www.ashm.org.au/doxy-pep). CHANGES IN MANAGEMENT AS A RESULT OF THIS CONSENSUS STATEMENT: For GBMSM at high risk of syphilis, and perhaps other bacterial STIs, clinicians may consider prescribing doxy-PEP for a limited period of time, followed by a review of ongoing need. Unlike human immunodeficiency virus (HIV) pre-exposure prophylaxis (PrEP), doxy-PEP may not be suitable as a population-level intervention and should instead be used more selectively.


Subject(s)
Chlamydia , Gonorrhea , HIV Infections , Sexual and Gender Minorities , Sexually Transmitted Diseases , Syphilis , Humans , Male , Australia/epidemiology , Doxycycline/therapeutic use , Gonorrhea/prevention & control , HIV Infections/prevention & control , HIV Infections/epidemiology , Homosexuality, Male , Post-Exposure Prophylaxis , Sexually Transmitted Diseases/epidemiology , Syphilis/prevention & control
5.
Qual Health Res ; : 10497323241234482, 2024 Mar 10.
Article in English | MEDLINE | ID: mdl-38462475

ABSTRACT

In May 2022, a global outbreak of mpox (formerly monkeypox virus) affected thousands of mainly gay and bisexual men. Mpox is usually a time-limited illness that can involve fever, pain, and skin lesions, but may require hospitalisation. There is scant research into the firsthand experiences of people affected by mpox, including experiences of symptoms, healthcare, and recovery. This study considers the different illness narratives of people who experienced mpox in Australia in 2022. In-depth interviews and 6-month follow-up interviews were conducted with 16 people, including 13 people diagnosed with mpox and three close contacts. All participants were cisgender gay or bisexual men living in Australia. Participants' accounts described minor to severe periods of sickness, negative and stigmatising experiences engaging with healthcare, and some participants experienced long-term effects on their sexual well-being and complications from mpox. The emergency outbreak context meant that mpox was highly distressing, making it difficult to manage and producing varying forms of disruption to everyday life. Mpox was narrated as disruptive in different ways: as a minor interruption to holiday plans, a prolonged period of poor health, or a biographically disruptive event prompting a re-evaluation of sexual values and health. This analysis demonstrates that an unfamiliar emergent disease outbreak related to sexual practices and sociality can reconfigure personal life and sexual well-being, suggesting a need to focus on providing quality patient care in outbreaks of mpox and other infectious diseases.

6.
AIDS ; 38(3): 363-372, 2024 Mar 01.
Article in English | MEDLINE | ID: mdl-37877295

ABSTRACT

INTRODUCTION: HIV preexposure prophylaxis (PrEP) is highly effective at preventing HIV. We aimed to assess mental and physical health among long-term PrEP users in Australia's X-PLORE cohort. METHODS: In early 2021, 1485 X-PLORE participants were emailed a survey covering demographics, sexual practices, ongoing PrEP use, physical and psychological diagnoses received since commencing PrEP, substance use, and impacts of the COVID-19 pandemic. Current anxiety and depression were assessed using GAD-7 and PHQ-9 questionnaires. RESULTS: Of 476 participants (completion rate 32.1%), 99.8% were cis-gender men. Median PrEP use duration was 48 months (2002 person-years), with 81.7% currently using PrEP. PrEP-related toxicity was uncommon: 2.9% reported bone fractures, 1.3% low bone density, and 4.0% reported kidney problems, largely not necessitating PrEP cessation. Most (92.0%) rated their health as 'good' to 'excellent', and 22.6% reported improved health since starting PrEP, often because of improved mental health. Only 6.2% reported deterioration in health since starting PrEP, largely unrelated to PrEP. The most common diagnoses were hypertension (9.9%), depression (13.2%) and anxiety (14.9%); 17% had PHQ-9 scores indicating current moderate-to-severe depression, which was associated with unemployment [adjusted odds ratio (aOR) 3.90], regular cannabis use (aOR 2.49), and having ceased PrEP (aOR 2.13). CONCLUSION: Among long-term PrEP users, of which over 80% were currently using PrEP, self-reported PrEP toxicity was uncommon. With almost one in five PrEP users categorized as having depression, and with higher risk among those having ceased PrEP, we recommend routine screening for depression and anxiety in PrEP users and corresponding follow-up of patients no longer attending for PrEP.


Subject(s)
HIV Infections , Pre-Exposure Prophylaxis , Sexual and Gender Minorities , Male , Humans , Homosexuality, Male , HIV Infections/epidemiology , HIV Infections/prevention & control , Mental Health , Pandemics , Australia/epidemiology
7.
Sex Transm Infect ; 100(2): 106-107, 2024 Feb 19.
Article in English | MEDLINE | ID: mdl-38124214

ABSTRACT

A gay man with well-controlled HIV and vaccinated against mpox presented with severe proctitis. Testing revealed anorectal mpox, herpes simplex virus, lymphogranuloma venereum, Neisseria gonorrhoeae and Mycoplasma genitalium Serology was indicative of infectious syphilis. This case highlights the need to consider a wide range of concurrent sexually transmitted infections in patients with proctitis, including those vaccinated against mpox.


Subject(s)
Gonorrhea , HIV Infections , Lymphogranuloma Venereum , Mpox (monkeypox) , Mycoplasma genitalium , Proctitis , Syphilis , Male , Humans , Lymphogranuloma Venereum/complications , Lymphogranuloma Venereum/diagnosis , Lymphogranuloma Venereum/drug therapy , Syphilis/complications , Syphilis/diagnosis , Syphilis/drug therapy , Gonorrhea/complications , Gonorrhea/diagnosis , Proctitis/etiology , Simplexvirus , HIV Infections/complications , Homosexuality, Male
9.
Sex Health ; 20(6): 585-587, 2023 12.
Article in English | MEDLINE | ID: mdl-37852607

ABSTRACT

BACKGROUND: In August 2022, in response to a global mpox outbreak, the World Health Organization recommended the Vaccinia vaccination for at-risk people. METHODS: Case study. RESULTS: We describe a case of a HIV-negative bisexual man who developed a symptomatic mpox infection 13weeks after completing a two-dose course of subcutaneous third-generation modified vaccinia Ankara vaccines. The case likely acquired his mpox infection in the USA; was diagnosed in Aotearoa, New Zealand; and was followed-up in Australia, as he was actively travelling during his infection. CONCLUSIONS: This case highlights the importance of maintaining clinical suspicion for mpox in people who present with consistent symptoms, even if they are fully vaccinated. Also, as he travelled around Aotearoa, New Zealand, and Australia during his infection, this case highlights how public health authorities and clinicians can cooperate across jurisdictional boundaries to support cases and minimise the risk of onward transmission.


Subject(s)
Mpox (monkeypox) , Smallpox Vaccine , Vaccinia , Male , Humans , Vaccinia/prevention & control , New Zealand , Vaccinia virus
11.
Sex Health ; 20(5): 403-410, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37611539

ABSTRACT

BACKGROUND: In mid-2022, a global mpox (formerly 'monkeypox') outbreak affecting predominantly gay and bisexual men emerged in non-endemic countries. Australia had never previously recorded mpox cases and there was no prior research on knowledge or attitudes to mpox among gay and bisexual men across Australia. METHODS: We conducted a national, online cross-sectional survey between August 2022 and September 2022. Participants were recruited through community organisation promotions, online advertising, and direct email invitations. Eligible participants were gay, bisexual or queer; identified as male (cisgender or transgender) or non-binary; aged 16years or older; and lived in Australia. The main outcome measures were: knowledge and concern about mpox; recognition of mpox symptoms and transmission routes; vaccination history; acceptability of behavioural changes to reduce mpox risk, and willingness to be vaccinated. RESULTS: Of 2287 participants, most participants were male (2189/2287; 95.7%) and gay (1894/2287; 82.8%). Nearly all had heard about mpox (2255/2287; 98.6%), and the majority were concerned about acquiring it (1461/2287; 64.4%). Most of the 2268 participants not previously diagnosed with mpox correctly identified skin lesions (2087; 92%), rash (1977; 87.2%), and fever (1647; 72.6%) as potential symptoms, and prolonged and brief skin-to-skin contact as potential ways to acquire mpox (2124, 93.7%; and 1860, 82%, respectively). The most acceptable behavioural changes were reducing or avoiding attendance at sex parties (1494; 65.9%) and sex-on-premises venues (1503; 66.4%), and having fewer sexual partners (1466; 64.6%). Most unvaccinated and undiagnosed participants were willing to be vaccinated (1457/1733; 84.1%). CONCLUSIONS: People at risk of mpox should be supported to adopt acceptable risk reduction strategies during outbreaks and to seek vaccination.

12.
Open Forum Infect Dis ; 10(8): ofad401, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37593532

ABSTRACT

Background: Gay and bisexual men using HIV pre-exposure prophylaxis (PrEP) are at increased risk for sexually transmissible infections. Hepatitis C virus (HCV) risk among PrEP users is less clear. We explored HCV prevalence and incidence among cohorts of gay and bisexual men using PrEP and sources of heterogeneity across studies. Methods: This was a systematic review and meta-analysis of open-label PrEP studies to April 2022 reporting HCV prevalence at baseline or incidence during follow-up among gay and bisexual men using PrEP. Pooled prevalence and incidence estimates were calculated using random-effects meta-analysis, and subgroup analyses were performed by study- and country-level characteristics, including availability of HCV direct-acting antiviral (DAA) therapy at time of study. Results: Twenty-four studies from 9 countries were included, with a total sample of 24 733 gay and bisexual men. Pooled HCV antibody baseline prevalence was 0.97% (95% CI, 0.63%-1.31%), and pooled HCV RNA baseline prevalence was 0.38% (95% CI, 0.19%-0.56%). Among 19 studies reporting HCV incidence, incidence ranged from 0.0 to 2.93/100 person-years (py); the pooled estimate was 0.83/100py (95% CI, 0.55-1.11). HCV incidence was higher in 12 studies that began follow-up before broad DAA availability (1.27/100py) than in 8 studies that began follow-up after broad DAA availability (0.34/100py) and higher in studies in Europe compared with North America and Australia. Conclusions: Early reports of high HCV incidence among PrEP-using cohorts likely reflect enrollment of individuals based on specific risk-based eligibility criteria for smaller studies and enrollment before DAA scale-up. In contexts where both DAAs and PrEP have been implemented at scale, studies report lower HCV incidence. PrEP-specific HCV testing guidelines should be guided by local epidemiology.

13.
Sex Health ; 20(2): 99-104, 2023 04.
Article in English | MEDLINE | ID: mdl-36927481

ABSTRACT

Recent studies have provided evidence for the effectiveness of using doxycycline (Doxy-PEP) to prevent bacterial sexually transmissible infections (STI), namely chlamydia, gonorrhoea, and syphilis, among gay, bisexual, and other men who have sex with men who have experienced multiple STIs. However, there remain several unanswered questions around potential adverse outcomes from Doxy-PEP, including the possibility of inducing antimicrobial resistance in STIs and other organisms, and the possibility of disrupting the microbiome of people who choose to use Doxy-PEP. This interim position statement from the Australasian Society for HIV, Viral Hepatitis and Sexual Health Medicine aims to outline the current evidence for Doxy-PEP, and to highlight potential adverse outcomes, to enable clinicians to conduct evidence-based conversations with patients in Australia and Aotearoa New Zealand who intend to use Doxy-PEP.


Subject(s)
HIV Infections , Hepatitis, Viral, Human , Sexual Health , Sexual and Gender Minorities , Sexually Transmitted Diseases , Male , Humans , Doxycycline/therapeutic use , Homosexuality, Male , HIV Infections/prevention & control , Post-Exposure Prophylaxis , New Zealand , Sexually Transmitted Diseases/prevention & control
14.
Sex Health ; 20(1): 1-8, 2023 02.
Article in English | MEDLINE | ID: mdl-36356948

ABSTRACT

The 'Australian Sexually Transmitted Infection (STI) Management Guidelines For Use In Primary Care' (www.sti.guidelines.org.au ) provide evidence-based, up-to-date guidance targeted at use in primary care settings. A major review of the guidelines was undertaken in 2020-22. All content was reviewed and updated by a multi-disciplinary group of clinical and non-clinical experts, and assessed for appropriateness of recommendations for key affected populations and organisational and jurisdictional suitability. The guidelines are divided into six main sections: (1) standard asymptomatic check-up; (2) sexual history; (3) contact tracing; (4) STIs and infections associated with sex; (5) STI syndromes; and (6) populations and situations. This paper highlights important aspects of the guidelines and provides the rationale for significant changes made during this major review process.


Subject(s)
Sexually Transmitted Diseases , Humans , Australia , Sexually Transmitted Diseases/epidemiology , Sexual Behavior , Contact Tracing , Primary Health Care
16.
AIDS Behav ; 26(6): 1808-1820, 2022 Jun.
Article in English | MEDLINE | ID: mdl-34782934

ABSTRACT

Gay and bisexual men (GBM) who use pre-exposure prophylaxis (PrEP) are at increased risk of sexually transmitted infections (STIs) compared to those who don't use PrEP. Since the implementation of PrEP in Australia, it is possible that attitudes towards STIs have shifted in line with changes in risk and transmission dynamics in the context of increased screening. As the extent to which GBM utilise STI prevention strategies likely depends on their attitudes towards STIs and STI prevention, the aims of this study were to use latent class analysis (LCA) to classify GBM using PrEP on the basis of their attitudes towards STIs and reported risk behaviours, and examine how these categorisations relate to risk of STI acquisition. 1225 GBM who were previously enrolled in a PrEP implementation study (The PrEPX Study) completed a survey focused on sexual behaviours and attitudes towards STIs 1 year post-study follow-up. Data on chlamydia, gonorrhoea and syphilis testing and positivity were available through a sentinel network of participating study clinics. Using LCA, participants were allocated into four classes; Class 1, "Some concern and lowest risk"; Class 2, "Low concern and lower risk"; Class 3, " High concern and higher risk"; and Class 4, "Low concern and highest risk". The majority (78%) of participants were classified into Class 3 or Class 4, two groups which were distinguished by highly disparate attitudes towards STIs but with a similar proportion of participants diagnosed with a bacterial STI in the last 12 months (48% and 57%, respectively). Findings suggest that attitudes towards STIs among GBM using PrEP in Australia vary considerably, and this will likely influence their receptivity to different STI prevention strategies.


Subject(s)
HIV Infections , Pre-Exposure Prophylaxis , Sexual and Gender Minorities , Sexually Transmitted Diseases , Attitude , HIV Infections/diagnosis , HIV Infections/epidemiology , HIV Infections/prevention & control , Homosexuality, Male , Humans , Latent Class Analysis , Male , Sexually Transmitted Diseases/diagnosis , Sexually Transmitted Diseases/epidemiology , Sexually Transmitted Diseases/prevention & control
17.
Aust J Gen Pract ; 50(7): 479-482, 2021 07.
Article in English | MEDLINE | ID: mdl-34189553

ABSTRACT

BACKGROUND: Pre-exposure prophylaxis (PrEP) is a highly effective method of human immunodeficiency virus (HIV) prevention available to prescribe on the Pharmaceutical Benefits Scheme general schedule. OBJECTIVE: The aim of this article is to provide information and guidance to general practitioners (GPs) and other healthcare providers on providing PrEP, and to discuss efficacy, adverse effects, monitoring and further resources. DISCUSSION: GPs can play a central role in discussing HIV prevention strategies for people who may be at risk of HIV. An open and engaging discussion will assist patients in making an informed decision on whether PrEP is suitable for them.


Subject(s)
General Practice , General Practitioners , HIV Infections , Pre-Exposure Prophylaxis , Attitude of Health Personnel , HIV Infections/prevention & control , Humans
18.
J Acquir Immune Defic Syndr ; 87(4): 1011-1015, 2021 08 01.
Article in English | MEDLINE | ID: mdl-33770064

ABSTRACT

BACKGROUND: PrEPX was an Australian HIV pre-exposure prophylaxis (PrEP) study conducted between 2016 and 2018. This analysis aimed to estimate hepatitis C (HCV) incidence and explore likely modes of transmission. SETTING: Cohort study of PrEP users in Victoria, Australia. METHODS: HCV tests were conducted at enrollment and every 12 months thereafter. HCV incident cases were identified from laboratory data. Likely modes of transmission were inferred from computer-assisted self-interviews, medical records, and interviews. RESULTS: Among 3202 PrEPX participants tested for HCV at baseline, HCV RNA-positive prevalence was 0.22% (95% confidence interval: 0.09 to 0.45). Among participants testing HCV antibody-negative or RNA-negative at baseline, 2058 had at least one follow-up HCV test. Eight incident HCV cases were identified during 2111 person-years of follow-up (incidence 0.38/100 person-years); all were primary infections in men who had sex with men. Clinical, laboratory, and computer-assisted self-interviews data were available for all, and 6 cases were interviewed. Three cases were attributable to injecting drug use (IDU). A fourth case reported IDU, but his HCV was attributable to sexual transmission. Four other cases reported no IDU and probably acquired HCV sexually. Most cases reported anal trauma in the context of condomless receptive anal intercourse during group sex at sex-on-premises venues. CONCLUSIONS: In PrEPX, HCV incidence was low compared to international PrEP studies, and most cases were transmitted sexually. Our findings highlight the need for HCV prevention messaging by clinicians, in sex-on-premises venues, and on digital platforms used to arrange group sex; and the need for HCV screening among some PrEP-using men who have sex with men.


Subject(s)
Anti-HIV Agents/therapeutic use , HIV Infections/complications , Hepatitis C/complications , Pre-Exposure Prophylaxis , Adult , Australia/epidemiology , Bisexuality , Cohort Studies , HIV Infections/drug therapy , HIV Infections/epidemiology , HIV Infections/prevention & control , Hepacivirus/isolation & purification , Hepatitis C/epidemiology , Homosexuality, Male , Humans , Incidence , Male , Safe Sex , Substance Abuse, Intravenous
19.
Lancet Infect Dis ; 21(5): 647-656, 2021 05.
Article in English | MEDLINE | ID: mdl-33676595

ABSTRACT

BACKGROUND: To address the increasing incidence of gonorrhoea and antimicrobial resistance, we compared the efficacy of Listerine and Biotène mouthwashes for preventing gonorrhoea among men who have sex with men (MSM). METHODS: The OMEGA trial was a multicentre, parallel-group, double-blind randomised controlled trial among MSM, done at three urban sexual health clinics and one general practice clinic in Australia. Men were eligible if they were diagnosed with oropharyngeal gonorrhoea by nucleic acid amplification test (NAAT) in the previous 30 days or were aged 16-24 years. They were randomly assigned to receive Listerine (intervention) or Biotène (control) via a computer-generated sequence (1:1 ratio, block size of four). Participants, clinicians, data collectors, data analysts, and outcome adjudicators were masked to the interventions after assignment. Participants were instructed to rinse and gargle with 20 mL of mouthwash for 60 s at least once daily for 12 weeks. Oropharyngeal swabs were collected by research nurses every 6 weeks, and participants provided saliva samples every 3 weeks, to be tested for Neisseria gonorrhoeae with NAAT and quantitative PCR. The primary outcome was proportion of MSM diagnosed with oropharyngeal N gonorrhoeae infection at any point over the 12-week period, defined as a positive result for either oropharyngeal swabs or saliva samples by NAAT, and the cumulative incidence of oropharyngeal gonorrhoea at the week 12 visit. A modified intention-to-treat analysis for the primary outcome was done that included men who provided at least one follow-up specimen over the 12-week study period. The trial was registered on the Australian and New Zealand Clinical Trials Registry (ACTRN12616000247471). FINDINGS: Between March 30, 2016, and Oct 26, 2018, 786 MSM were screened and 256 were excluded. 264 MSM were randomly assigned to the Biotène group and 266 to the Listerine group. The analysis population included 227 (86%) men in the Biotène group and 219 (82%) in the Listerine group. Oropharyngeal gonorrhoea was detected in ten (4%) of 227 of MSM in the Biotène group and in 15 (7%) of 219 in the Listerine group (adjusted risk difference 2·5%, 95% CI -1·8 to 6·8). The cumulative incidence of oropharyngeal gonorrhoea at the week 12 visit did not differ between the two mouthwash groups (adjusted risk difference 3·1%, 95% CI -1·4 to 7·7). INTERPRETATION: Listerine did not reduce the incidence of oropharyngeal gonorrhoea compared with Biotène. However, previous research suggests that mouthwash might reduce the infectivity of oropharyngeal gonorrhoea; therefore, further studies of mouthwash examining its inhibitory effect on N gonorrhoeae are warranted to determine if it has a potential role for the prevention of transmission. FUNDING: Australian National Health and Medical Research Council.


Subject(s)
Anti-Infective Agents, Local/therapeutic use , Gonorrhea/prevention & control , Mouthwashes/therapeutic use , Adult , Australia , Double-Blind Method , Drug Combinations , Glucose Oxidase , Homosexuality, Male , Humans , Lactoperoxidase , Male , Multicenter Studies as Topic , Muramidase , Neisseria gonorrhoeae/drug effects , New Zealand , Respiratory Tract Infections/prevention & control , Salicylates/therapeutic use , Sexual and Gender Minorities , Surveys and Questionnaires , Terpenes/therapeutic use , Young Adult
20.
Clin Infect Dis ; 71(2): 318-322, 2020 07 11.
Article in English | MEDLINE | ID: mdl-31420649

ABSTRACT

BACKGROUND: Syphilis control among men who have sex with men (MSM) would be improved if we could increase the proportion of cases who present for treatment at the primary stage rather than at a later stage, as this would reduce their duration of infectivity. We hypothesized that MSM who practiced receptive anal intercourse were more likely to present with secondary syphilis, compared to MSM who did not practice receptive anal intercourse. METHODS: In this retrospective analysis of MSM diagnosed with primary or secondary syphilis at Melbourne Sexual Health Centre between 2008 and 2017, we analyzed associations between the stage of syphilis (primary vs secondary) and behavioral data collected by computer-assisted self-interviews. RESULTS: There were 559 MSM diagnosed with primary (n = 338) or secondary (n = 221) syphilis. Of these, 134 (24%) men reported not practicing receptive anal sex. In multivariable logistic regression analysis, MSM were more likely to present with secondary rather than primary syphilis if they reported practicing receptive anal intercourse (adjusted odds ratio 3.90; P < .001) after adjusting for age, human immunodeficiency virus status, and condom use. MSM with primary syphilis who did not practice receptive anal intercourse almost always (92%) had their primary syphilis lesion on their penis. CONCLUSIONS: The finding that MSM who practiced receptive anal intercourse more commonly presented with secondary syphilis-and hence, had undetected syphilis during the primary stage-implies that anorectal syphilis chancres are less noticeable than penile chancres. These men may need additional strategies to improve early detection of anorectal chancres, to reduce their duration of infectivity and, hence, reduce onward transmission.Men who practiced receptive anal intercourse (AI) were more likely to present with secondary syphilis, compared to men who exclusively practiced insertive AI. Hence, men who practice receptive AI may need additional strategies to detect anal chancres, to reduce transmission.


Subject(s)
HIV Infections , Sexual and Gender Minorities , Syphilis , Homosexuality, Male , Humans , Male , Retrospective Studies , Risk Factors , Sexual Behavior , Sexual Partners , Syphilis/diagnosis , Syphilis/epidemiology
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