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5 result(s) for "Vassal, Anne-Fanny"
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A prospective multi-site study to evaluate the performance and usability of an oral fluid-based HIV self-test in Canada
Background Blood and oral fluid-based HIV self-tests are important for reaching the undiagnosed living with HIV. The study objectives were to evaluate the oral fluid-based OraQuick® HIV Self-Test (HIV-ST) performance in comparison to laboratory reference testing; determine if laypersons can correctly perform the HIV-ST; document if intended users can successfully interpret pre-made contrived positive, negative, and invalid results; and document if intended users can understand the key messages in the product labeling. Methods This prospective study enrolled consenting adult intended users of HIV self-testing from six community health centres in four Canadian provinces between June 2022 and January 2024. Positive and negative agreement was determined by comparing the results of the HIV self-tests with the results of the laboratory-based “gold standard” Abbott Alinity HIV Antigen/Antibody Combo test. Descriptive statistics were used to summarize usability self-test procedure steps. Results Overall, 951 participants were recruited and consented with 911 available for all analyses. With respect to sociodemographics: 84% of participants were between 18–45 years of age, 73% had at least a college education, 48% were Cis-male, 45% were employed; and 26% identified as White, 23% as African, Caribbean or Black, 5% as Indigenous [First Nations, Métis or Inuit], 33% as Asian, and 6% as LatinX. Primary efficacy analysis on the 911 who completed HIV-ST revealed a single confirmed positive participant and a negative percent agreement of 100% (880/880, 95% CI: 99.9–100%) with the comparator method. For usability determination, the average success rate for “critical” steps for completing the test was 94.1%. Approximately 97% of participants found the instructions easy to follow and 98% of participants reported they would use the test again. Of the 465 participants who interpreted the strong positive, weak positive, negative, and invalid pre-made contrived results, the average of correct interpretations ranged from 59–97% Conclusions A licensed oral fluid-based HIV self-test in Canada can present an accurate, easy-to-use, and less invasive alternative to blood-based HIV testing. The addition of an oral-fluid self-test along with the current licensed blood-based HIV self-test could help reach the undiagnosed with HIV in Canada and positively impact HIV testing rates overall by offering individuals a choice of self-testing devices.
An observed, prospective field study to evaluate the performance and acceptance of a blood-based HIV self-test in Canada
Background Self testing for HIV is a targeted intervention with the potential to increase the access, uptake and frequency of HIV testing and more effectively reach the undiagnosed, especially in priority populations. The objectives of this study were to (1) evaluate the INSTI HIV self-test performance compared with laboratory reference testing, (2) document if intended users can perform the steps to use the HIV self-test device, and (3) document if intended users can successfully interpret contrived positive, negative, and invalid results. Study was intended to be submitted to Health Canada for review for regulatory approval purposes. Methods The study used a cross-sectional design and recruited consenting adults who were representative of intended users of HIV self-testing from four community sites across Ontario, Québec, and Manitoba between August 2019 and March 2020. The results of the observed HIV self-test were compared with results of the Abbott Architect HIV Ag/Ab Combo test. Usability outcomes for critical (e.g., lancing finger, blood droplet into bottle, shaking bottle four times) and noncritical self-test procedure steps were also determined. Results Overall, 77% ( n  = 522) of participants were between 18 and 45 years of age, 61% ( n  = 410) were male, 71% ( n  = 480) had some college or more education, and 45% ( n  = 307) were employed; identity for race and ethnicity: Caucasian (44%; n  = 296), African, Caribbean or Black (17%; n  = 113), Indigenous [First Nations, Métis or Inuit] (14%; n  = 95), Asian (16%; n  = 106), Latin American (7%; n  = 46). Primary performance analysis on 678 completed HIV self-tests revealed a positive percent agreement of 100% (5/5, 95% CI: 43.6–97.0%) and a negative percent agreement of 99.5% (614/617, 95% CI: 98.6–99.8%) with the comparator method. The overall percent agreement of results interpretation between participant and observer was 93.5% ( n  = 633). For the 708 participants who took part in the usability study, the average success rate for steps determined to be “critical” for successful completion of the test was 92.4%. 97% ( n  = 670) of participants found the instructions easy to follow, and 95% ( n  = 655) of participants indicated that they would use the test again. Of the 404 participants who interpreted the strong positive, weak positive, negative, and invalid contrived results, successful interpretation ranged from 90.6% (for weak positive, n  = 366) to 99.3% (for negative, n  = 401). Conclusions The addition of a regulatory-approved self-test into the Canadian HIV testing landscape could significantly increase HIV testing rates. Having a blood-based HIV self-test approved in Canada can offer an accurate, acceptable, and simple alternative to facility-based HIV testing, particularly when impacted by Coronavirus pandemic restrictions.
An Unsupervised Smart App–Optimized HIV Self-Testing Program in Montreal, Canada: Cross-Sectional Study
Although HIV self-testing strategies have been recommended by the World Health Organization, HIV self-tests are not yet approved in Canada. Currently approved HIV self-tests offer toll-free lines that are insufficient for initiating expedited linkages to counseling and care, accurate interpretation, and support during HIV self-testing. We developed an innovative, multilingual software app called HIVSmart! to plug these gaps. This study aimed to test our app-optimized oral HIV self-testing strategy for feasibility in men who have sex with men (MSM) who presented to test at a large sexual health clinic (Clinique Médicale L'Actuel) in Montreal. Between July 2016 and February 2017, we offered a strategy consisting of the OraQuick In-Home HIV Test (an investigational device) and a tablet installed with the HIVSmart! app to study participants, who presented at a private office in the clinic, mimicking an unsupervised home environment. We evaluated the strategy for its feasibility, acceptability, and preference. Using the HIVSmart! app, participants were guided through the self-testing process. We determined feasibility with a metric defined as the completion rate, which consisted of the following 3 steps: (1) self-test conduct; (2) self-test interpretation; and (3) linkages to care. Participants independently performed, interpreted, recorded their self-test and result, engaged in pre- and posttest counseling, and sought linkages to care. Laboratory tests (p24, Western Blot, and RNA), as per country algorithms, were expedited, and linkages based on the rapid test status were arranged. Mean age of the 451 participants enrolled was 34 (range, 18-73) years. Of all participants, 97.1% (438/451) completed and submitted the survey through the HIVSmart! app. In total, 84.7% (371/438) of the participants were well educated (beyond high school) and 52.5% (230/438) had been tested within the past 6 months. Of the 451, 11.5% (52/451) were on pre-exposure prophylaxis. Feasibility (completion rate), an average proportion of the 3 steps, was computed to be 96.6% (419/451). The acceptability of the strategy was high at 98.5% (451/458). A majority of the participants (448/451, 99.3%) were found to be self-tested and lab-confirmed negative and were counseled after self- and rapid tests. In total, 0.7% (3/451) of the participants who self-tested positive and were lab-confirmed positive were linked to a physician within the same day. Furthermore, 98.8% (417/422) of the participants found the app to be useful and 94.0% (424/451) were willing to recommend it to a friend or partner. The HIVSmart! app-optimized strategy was feasible, accepted, and preferred by an educated, urban MSM population of Montreal. With the app, participants were able to perform, interpret, store results, and get rapidly linked to care. The HIVSmart!-optimized, self-testing strategy could be adapted and contextualized to many at-risk populations within Canada and worldwide, thereby maximizing its public health impact.
Can an HIVSmart! App-optimized Self-Testing Strategy be Operationalized in Canada?
Abstract Background Although HIV self-tests are recommended by the WHO, they are not yet approved in Canada. Service delivery gaps such as linkages to counseling and care remain unachieved by offering self-tests without adequate support. In this first Canadian study, we evaluated the feasibility of operationalizing an innovative HIVSmart! app-optimized oral HIV self-testing strategy in men who have sex with men (MSM), presenting at a large sexual health clinic in Montreal. Methods Between July 2016 to February 2017, participants were offered the OraQuick In-Home HIV Test, and a tablet installed with the HIVSmart! app, at a private office in the clinic to simulate an unsupervised home environment. With the HIVSmart! app, participants independently performed and interpreted self-tests, and were linked to in-person post-test counseling and care. Self-test results were confirmed by laboratory tests (p24, Western Blot, RNA as needed). Results The mean age of the 451 participants was 34 years (18–73); 85% were well educated (beyond high school, n = 371/438); 53% (230/438) were frequent testers (past 6 months), and 13% were on PrEP (52/451). 99% (417/422) of participants found the HIVSmart! app helpful in guiding them through the self-testing procedure; 93% (418/451) of participants interpreted their tests accurately; and 94% (395/419) stated they would recommend the app-optimized self-testing strategy to their partners. Feasibility (completion rate of self-testing) was 93% (419/451), and acceptability of the strategy was high at 99% (451/458). All HIV self-test negative participants (448/451, 100%) were counseled following the self-test. Three participants self-tested positive, were confirmed HIV positive (0.7% prevalence), and were rapidly linked to care with a physician. Conclusion The HIVSmart! app-optimized strategy was feasible, and highly accepted by an educated, frequently testing, urban MSM population of Montréal. With the app, participants were able to interpret their test results accurately and were rapidly linked to care. Innovations like HIVSmart! which engage, aid, and facilitate linkages to care, can be adapted to suit the needs of many populations in Canada and internationally, maximizing global impact through reverse innovation. Disclosures All authors: No reported disclosures.