Observational studyJournal of Korean medical science2025
Management of a Large Nosocomial Outbreak From an Index of Crusted Scabies in a Tertiary Care Hospital, 2023: A Retrospective Observational Study.
Observational study in Journal of Korean medical science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Scabies outbreak management in a vulnerable elderly population: Evidence from northeastern Iran.Parasite epidemiology and control · 2026Article
- Controlling recurrent scabies outbreaks in a geriatric hospital: impact of a prevention bundle and lessons from a breakthrough case.Frontiers in public health · 2026Article
- Ungual scabies mimicking periungual verruca in a patient with metastatic breast cancer treated with abemaciclib: a case report.Journal of Yeungnam medical science · 2025Article
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Authors and funding
9 authors.
Funding
Abstract
backgroundIn 2023, we experienced an outbreak from a case of undiagnosed crusted scabies, resulting in a significant number of exposed individuals and secondary cases. In this report, we describe the outbreak control measures, the attack rate, and the risk factors for acquisition of scabies among healthcare workers (HCWs).
methodsThis study was conducted in a 2,700-bed tertiary care hospital in Seoul, South Korea. The attack rate was defined both for microscopic proven cases per exposed individuals and as the sum of proven and probable cases per exposed individuals. Outbreak control measures included identifying and treating all potentially exposed individuals with or without symptoms, as well as environmental disinfection.
resultsFrom the index, there was potential quinary transmission resulting in 63 proven cases, 142 probable cases, and a total of 1,820 exposed individuals, including 734 contacts from the index case. The attack rate from the index was 7% (50/734) based on proven cases and 19% (138/734) based on proven and probable cases. Among the 526 HCWs who received preemptive topical treatment with permethrin applied once, 21 (4%) were later diagnosed as scabies. In addition, 5 of 20 HCWs (25%) with initial proven scabies had a persistent positive microscopic exam after four permethrin treatments. In the case group, there were significantly more nurses (60% vs. 43%,
conclusionLowering the threshold for suspicion of crusted scabies is important, as a single missed case could lead to a large outbreak. Simultaneously applying preemptive permethrin cream to all potentially exposed individuals might have been effective in preventing further transmission. However, caution is needed because the development of scabies or persistent scabies is possible even with preemptive or therapeutic treatment.
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