ArticleThe American journal of tropical medicine and hygiene2026
Probable Autochthonous Transmission of Mycobacterium lepromatosis in the Pacific Northwestern United States.
Article in The American journal of tropical medicine and hygiene, 2026. 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.
- Identification of Mycobacterium leprae and Mycobacterium lepromatosis Cases with Broad-Range Molecular Assays at a Single Large Reference Laboratory.The American journal of tropical medicine and hygiene · 2026Article
- M. leprae, M. lepromatosis, and Leprosy: Surprises and Surmises.The American journal of tropical medicine and hygiene · 2026Article
- Likely Native Cases of Leprosy Due to Mycobacterium lepromatosis in the United States and Canada.The American journal of tropical medicine and hygiene · 2026Article
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Authors and funding
4 authors.
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Abstract
Mycobacterium lepromatosis (M. lepromatosis), first described in 2008 as another mycobacterial species that causes Hansen's disease, has mainly been reported in Mexico, Central America, and the southern United States; however, its disease spectrum and distribution remain unclear. A diagnostically challenging case that represents a likely autochthonous M. lepromatosis acquisition in the United States is reported in the present study. A 75-year-old immunocompetent man who had not traveled outside the Pacific Northwest developed an erythematous, ulcerating left thigh plaque, followed by three proximal sporotrichoid nodules. Biopsies revealed granulomatous inflammation with negative acid-fast stain results. Broad-range nontuberculous mycobacterial polymerase chain reaction testing identified M. lepromatosis in the sentinel ulcer and possible Mycobacteroides chelonae coinfection in the proximal nodule. The patient improved with multidrug therapy. Clinicians in the United States should keep Hansen's disease in the differential diagnosis, even for patients without international travel. Additional research is needed to clarify the phenotypic spectrum and geographic distribution of this pathogen.
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