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PrELUDE study evaluated daily pre-exposure prophylaxis (PrEP) in high-risk individuals in Australia. This open-label, single-arm study tested participants for HIV/STI and collected behavioural information three-monthly. We report trends over 18 months in medication adherence, side-effects, HIV/STI incidence and behaviour. 320 gay/bisexual men (GBM), 4 women and 3 transgender participants, followed on average 461 days, reported taking seven pills/week on 1,591 (88.5%) occasions and 4-6 pills/week on 153 (8.5%) occasions. No HIV infections were observed. STI incidence was high and stable, while gonorrhoea infections declined from 100.0 to 25.8/100 person-years between 6 and 15 months (p < 0.001). The number of HIV-positive and unknown-status sex partners, and condomless anal intercourse, significantly increased. In this high-risk cohort of mainly GBM, increases in risk behaviours and high STI incidence were not accompanied by HIV infections due to high adherence to daily PrEP. The study informed policy and further PrEP implementation among Australian GBM. [ABSTRACT FROM AUTHOR]

The number of gay and bisexual men (GBM) taking HIV pre-exposure prophylaxis (PrEP) to prevent HIV has rapidly increased since 2010, but limited information about barriers and facilitators to adherence has been reported outside of formal trial settings. We conducted semistructured in-depth interviews with 24 Australian cis- and transgender GBM with a history of PrEP use to gather data on adherence to PrEP. The majority of participants were able to access PrEP at no cost through implementation studies. Three key domains were explored—how individuals took PrEP, factors that aided PrEP adherence, and barriers to PrEP use. All participants recognized the importance of regular dosing to ensure protection from HIV, with some participants taking the initiative to pre-empt possible adherence obstacles and plan around these. Multiple strategies were used to aid adherence, including using tools such as a phone alarm and support and tips from other PrEP users, friends, or clinicians. Barriers to PrEP adherence included stigma, concerns about side effects, and difficulties in accessing PrEP. Although most participants encountered at least one barrier to PrEP use, they were resourceful and utilized a variety of approaches to ensure good adherence to PrEP was maintained. These narratives highlight a commitment to finding ways to make PrEP work in the daily lives of this cohort of Australian GBM, demonstrated by their active investigation of different routines to determine the most suitable dosing strategy, and creation of contingency plans if they were unable to access PrEP in their usual or preferred manner. [ABSTRACT FROM AUTHOR]

Background and Aims: Gay, bisexual and other men who have sex with men (GBM) use alkyl nitrites ('poppers') at higher rates than other populations to functionally enhance sexual experiences. Their use has been associated with HIV sexual risk behaviours including receptive anal sex. We investigate the prevalence, frequency, and motivations for poppers use and their relationship with HIV risk. We also discuss the implications of the recent scheduling changes to poppers by the Australian Therapeutic Goods Administration.Methods: Data were drawn from the Following Lives Undergoing Change (Flux) study, a prospective observational study of licit and illicit drug use among GBM. Between 2014 and 2018, 3273 GBM enrolled in the study. In 2018, 1745 GBM provided data relating to frequency of and motivations for poppers use and were included in this analysis.Results: Median age was 33 years (IQR 25-46) and 801 GBM (45.9%) had used poppers in the previous six months ('recent use'). Among these men, 195 (24.3%) had used them weekly or more frequently. Most recent users (77.4%) reported using poppers for a 'buzz' during sex or to facilitate receptive anal intercourse (60.8%). The majority (57.7%) of HIV-negative men reporting recent poppers use were concurrently taking HIV pre-exposure prophylaxis. Recent poppers use was independently associated with receptive anal intercourse with casual partners (aOR 1.71; 95%CI 1.35-2.16) and chemsex (aOR 4.32; 95%CI 3.15-5.94). Poppers use was not associated with anxiety, depression, or drug-related harms. Only 15.4% of current users indicated they would stop using poppers if they were criminalised; 65.0% said they would 'find other ways' to obtain them.Conclusions: Poppers are commonly used by Australian GBM to functionally enhance sexual experiences, particularly to facilitate receptive anal intercourse. Few men experienced drug-related harms from poppers use. Regulatory changes must ensure potential harms from popper use are minimised without increasing barriers to access or perpetuating stigma. [ABSTRACT FROM AUTHOR]