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Human Mycobacterium ulcerans infections developing at sites of trauma to skin
Abstract:
In Zaire, we studied 180 patients with Mycobacterium ulcerans infections and found 14 with a history of antecedent trauma at the site of the lesion (e.g., gunshot and land mine injuries, penetrating wood splinters, and scorpion stings). Two patients developed lesions following hypodermic injections. We believe that trauma is an important mode of transmitting M. ulcerans infections, or of introducing the etiologic agent into the dermis of subcutaneous tissue from superficially contaminated skin.
Insights
Trauma, including injuries and injections, may transmit Mycobacterium ulcerans infections. This study suggests skin trauma is a key factor in developing Buruli ulcer disease, highlighting potential transmission routes.
Area of Science:
- Infectious Diseases
- Dermatology
- Microbiology
Background:
- Mycobacterium ulcerans causes Buruli ulcer, a neglected tropical disease.
- The transmission route of Mycobacterium ulcerans remains incompletely understood.
- Antecedent skin trauma has been anecdotally linked to Buruli ulcer development.
Purpose of the Study:
- To investigate the role of antecedent trauma in the transmission of Mycobacterium ulcerans infections.
- To identify specific types of trauma associated with lesion development.
Main Methods:
- Retrospective study of 180 patients with Mycobacterium ulcerans infections in Zaire.
- Detailed patient history collection focusing on antecedent events at the lesion site.
Main Results:
- Fourteen out of 180 patients (7.8%) reported a history of trauma preceding lesion development.
- Traumatic events included gunshot wounds, land mine injuries, wood splinters, scorpion stings, and hypodermic injections.
- Two cases specifically linked lesion development to hypodermic injections.
Conclusions:
- Antecedent trauma is a significant factor in the transmission or introduction of Mycobacterium ulcerans.
- Trauma may facilitate the introduction of the bacterium into dermal and subcutaneous tissues.
- Understanding these transmission routes is crucial for Buruli ulcer prevention strategies.