An unusual outbreak of dermatitis due to rodent mite infestation in an acute-care hospital
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Published on: November 6, 2019
Majd S Alsoubani1, Andrea S Varela-Stokes2, Gabriela M Andujar Vazquez1
1Division of Geographic Medicine and Infectious Diseases, Department of Medicine, Tufts Medical Center, Boston, Massachusetts.
Abstract:
We report an outbreak of dermatitis associated with Ornithonysus bacoti and Liponyssoides sanguineus infestation in an acute ambulatory care setting. Healthcare workers developed dermatitis prior to the identification of the outbreak. A collaborative team effort resulted in complete eradication.
Insights
An outbreak of dermatitis caused by mite infestations occurred in a healthcare setting. Prompt identification and team efforts led to the successful eradication of the mites and resolution of the dermatitis.
Area of Science:
- Dermatology
- Public Health
- Infectious Disease
Background:
- Dermatitis outbreaks can occur in healthcare settings.
- Mite infestations, such as Ornithonysus bacoti and Liponyssoides sanguineus, can cause skin conditions.
- Early recognition of symptoms in healthcare workers is crucial for outbreak management.
Purpose of the Study:
- To report an outbreak of dermatitis linked to mite infestations.
- To describe the clinical presentation in healthcare workers.
- To outline the successful eradication strategy.
Main Methods:
- Case reporting of dermatitis in an acute ambulatory care setting.
- Identification of causative mite species: Ornithonysus bacoti and Liponyssoides sanguineus.
- Implementation of a collaborative team approach for control and eradication.
Main Results:
- Healthcare workers were the first to develop dermatitis, preceding outbreak identification.
- The specific mite species responsible for the outbreak were identified.
- A comprehensive strategy led to the complete eradication of the infestation.
Conclusions:
- Ornithonysus bacoti and Liponyssoides sanguineus can cause dermatitis outbreaks in clinical settings.
- Prompt recognition and a multidisciplinary approach are key to managing and eradicating such infestations.
- Effective control measures are essential to prevent further transmission and ensure patient and staff safety.

