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Background: Infection prevention and control (IPC) research has long neglected the home healthcare sector with its unique challenges. This study aimed to gain an understanding of the barriers to the implementation of infection prevention practices relevant to this setting, the related attitudes, perceived relevance and priorities from the home healthcare worker perspective in Switzerland., Methods: The mixed-method study involved semi-structured interviews (n = 18) and an anonymous web-based survey (n = 144) among nursing assistants and nurses from two home healthcare organizations in northwest Switzerland. Questions in both sub-studies focused on perceived challenges to infection prevention practices, perceived relevance, and related attitudes and mitigation strategies. Using an exploratory-sequential design, survey questions were designed to quantify and complement the findings from the interview study., Results: Healthcare workers in these two organisations felt adequately protected, trained and supported by their organisations regarding IPC (survey agreement rates > 90%). General challenges to IPC in the home environment most agreed on were lack of cleanliness, lack of space, and the priorities of the patient to be respected (survey agreement rates 85.4%, 77.1%, and 70.8%, respectively). Practices and perceived challenges in the case of colonisation with multi-drug resistant organisms (MDRO) and potentially infectious diarrheal or respiratory illnesses varied highly regarding information transfer, use of protective equipment, and use and disinfection practices of multi-use equipment. Challenges to hand hygiene, sharps safety, waste management and decontamination of equipment did not feature as a prominent concern., Conclusions: This study is the first to characterise the implementation of infection prevention practices and the related challenges in home healthcare in Switzerland. Home healthcare workers describe various challenges related to infection prevention practices as largely manageable in their work routine, and generally show satisfaction with the support provided by their organisations regarding IPC precautions. Key findings regarding challenges amenable to interventions include uncertainty and inconsistency regarding the management of MDRO colonisation and acute illnesses, and gaps in information transfer. Those challenges may benefit from both organisational interventions and further research into the level of precautions that are appropriate to the home healthcare setting., (© 2024. The Author(s).)

Objectives: To describe a suspected diphtheria outbreak in a Swiss asylum seeker reception centre, and to analyse its management response regarding testing and vaccination. Methods: We retrospectively analysed clinical, microbiology, and case management data of all asylum seekers tested for C. diphtheriae between 28th August and 31st December 2022 while residing at the centre. Results are reported descriptively. Results: Among 265 individuals tested, ten cases of cutaneous diphtheria, one simultaneous respiratory and cutaneous case, and nine respiratory carriers were identified. Mass throat screening, targeted throat testing and targeted wound testing yielded 4.8%, 4.3%, and 17.4% positive results, respectively. No respiratory carrier was identified among cutaneous cases undergoing a throat swab, and no symptomatic case was identified among individuals with unspecific throat symptoms. Rates of vaccination implementation of newly arriving asylum seekers before and after the outbreak were low (17.5% and 15.5%, respectively), as were rates of targeted vaccination among cases and close contacts. Conclusion: We provide evidence for transmission both prior to arrival and within the setting, suboptimal practices and timeliness of testing, and implementation gaps in vaccination., Competing Interests: The authors declare that they do not have any conflicts of interest., (Copyright © 2024 Brockhaus, Urwyler, Leutwyler, Würfel, Kohns Vasconcelos, Goldenberger, Keller, Tschudin Sutter and Labhardt.)

Infection prevention and control (IPC) research has focused on the hospital setting, neglecting the rapidly expanding home healthcare (HHC) sector. Current infection prevention recommendations do not reflect the challenges specific to the HHC setting. This scoping review considered any original studies reporting on barriers or facilitators to infection prevention practices in the context of HHC. Study characteristics were mapped, and a descriptive content analysis was performed. Based on the findings we propose a framework of eight HHC setting characteristics relevant to infection prevention implementation. 33 studies fulfilled the eligibility criteria. A majority of studies addressed sharps injury or blood and body fluid exposure prevention ( N =15) and the majority were conducted in the United States ( N =23). Study methodologies employed were surveys ( N =18), qualitative ( N =11), direct observation ( N =7), and one interventional study. The HHC setting characteristics relevant to infection prevention implementation were: the care process in the patient's immediate environment; the need to bring equipment and materials into the home; the provision and financing of equipment and materials; the use of patient space and facilities; the unique position of and the expectations towards HHC providers; working alone with little support; the intermittent nature of care; the attitudes of HHC providers formed by their work circumstances. Interventional studies generating higher-quality evidence for implementation are lacking. Furthermore, implementation of aseptic technique and the decontamination and reprocessing of equipment are poorly studied in the HHC setting and deserve more research interest. The proposed framework may guide future research and implementation work., (© 2024 The Authors.)

Background: True hypersensitivity reactions to rifampicin are relatively rare, nonetheless severe manifestations mostly involving a single organ have been documented. We report a case of acute multi-organ failure occurring after a medication error with re-exposure to rifampicin., Case Presentation: A 68-year old patient developed acute hypersensitivity pneumonitis, acute renal failure, acute liver failure and haemolytic anemia within hours after a second re-exposure to Rifampicin for the treatment of a hip prosthesis infection with Staphylococcus epidermidis. A recent rifampicin exposure 1 week earlier had resulted in a massive rise of CRP levels without organ manifestations. Nine years previously, the patient had developed a multi-organ hypersensitivity reaction 8 days after commencing treatment with rifampicin for pulmonary tuberculosis; and 23 years previously he had received rifampicin without problems. The organ-specific hypersensitivity reactions were largely reversible after withdrawal of rifampicin and treatment with steroids. A review of the literature and summary of WHO spontaneous safety reports is also given., Conclusions: Re-exposure to rifampicin in sensitised individuals may cause acute severe hypersensitivity reactions. Due to its indications in the management of mycobacterial and implant-associated infections, rifampicin is a drug which might be given decades apart, which poses a risk that information about previous intolerance is lost.