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Introduction: Successful adoption of POCTs (Point-of-Care tests) for COVID-19 in care homes requires the identification of ideal use cases and a full understanding of the contextual and usability factors that affect test results and minimise biosafety risks. This paper presents a scoping-usability and test performance study of a microfluidic immunofluorescence assay for COVID-19 in care homes. Methods: A mixed-methods evaluation was conducted in four UK care homes to scope usability and to assess the agreement with qRT-PCR. A dry run with luminescent dye was conducted to explore biosafety issues. Results: The agreement analysis was conducted on 227 asymptomatic participants (159 staff and 68 residents) and 14 symptomatic participants (5 staff and 9 residents). Asymptomatic specimens showed 50% (95% CI:1.3%−98.7%) positive agreement and 96% (95% CI: 92.5%−98.1%) negative agreement with overall prevalence and bias-adjusted Kappa (PABAK) of 0.911 (95% CI: 0.857−0.965). Symptomatic specimens showed 83.3% (95% CI: 35.9%−99.6%) positive agreement and 100% (95% CI: 63.1%−100%) negative agreement with overall prevalence and bias-adjusted Kappa (PABAK) of 0.857 (95% CI: 0.549−1). The dry run highlighted four main sources of contamination that led to the modification of the standard operating procedures. Simulation post-modification showed no further evidence of contamination. Conclusion: Careful consideration of biosafety issues and contextual factors associated with care home are mandatory for safe use the POCT. Whilst POCT may have some utility for ruling out COVID-19, further diagnostic accuracy evaluations are needed to promote effective adoption. [ABSTRACT FROM AUTHOR]

Background: Immunological responses to metal ions can occur in people with metal implantable devices. Nevertheless, patients are not routinely asked about metal hypersensitivity nor tested for it prior to surgical procedures. Moreover, we have not identified any published literature on patients' experiences with this condition. We undertook this study to better understand the experiences of patients with metal hypersensitivity and to determine what information would help them make an informed decision about implantable medical devices with metal compositions. Methods: This is a patient-oriented research using an interpretative phenomenological methodology. We enrolled 16 people from five countries (Canada, New Zealand, Spain, the UK, and the USA) who experienced metal hypersensitivity following implantable medical device. We collected data from in-depth, semi-structured interviews focused on pre-procedural patient education and postoperative experiences to elucidate the barriers and opportunities related to metal hypersensitivity. We analyzed the data using interpretative phenomenological analysis. Results: The majority were white biological women between the ages of 34 and 65. None of the participants were informed about immunological responses to metals in implants during the consenting process. They encountered many challenges when symptoms of metal hypersensitivity occurred. The outcomes for the few who had the implants removed were mixed. Conclusion: Hypersensitivity reactions to metal need to be discussed as part of the consenting process, and additional strategies are needed to mitigate this issue in the health system. [ABSTRACT FROM AUTHOR]