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Updated: Aug 17, 2026
Diagnosis of Ecto- and Endoparasites in Laboratory Rats and Mice
Published on: September 6, 2011
An outbreak of rat mite dermatitis in an animal research facility
Jim Kelaher1, Reena Jogi, Rajani Katta
1Section of General Medicine, Baylor College of Medicine, Houston, Texas, USA.
Abstract:
We describe an outbreak of rat mite dermatitis that affected 15 employees of an animal research facility. Cases of rat mite dermatitis are infrequently reported, and outbreaks are reported even less. Our case series demonstrates that in contrast to most prior outbreaks, rat mite dermatitis may occur even in modern, well-maintained physical surroundings and thus remains a relevant diagnosis today.
Insights
An outbreak of rat mite dermatitis affected 15 employees at an animal research facility. This highlights that rat mite dermatitis can occur even in modern settings, remaining a relevant diagnosis.
Area of Science:
- Veterinary Medicine
- Dermatology
- Occupational Health
Background:
- Rat mite dermatitis is infrequently reported, with outbreaks being even rarer.
- Previous outbreaks often linked to specific environmental conditions.
Observation:
- An outbreak of rat mite dermatitis occurred in 15 employees at an animal research facility.
- The facility was modern and well-maintained.
Findings:
- This case series indicates rat mite dermatitis can manifest in contemporary, well-kept environments.
- Outbreaks are not solely associated with substandard conditions.
Implications:
- Rat mite dermatitis should be considered in differential diagnoses, even in advanced facilities.
- Highlights the need for vigilance in occupational health surveillance in research settings.
