Ocular Onchocerca infections in two dogs in western United States
Abstract
Two dogs, one from California and one from Arizona, were found to have aberrant infections caused by filarial nematodes of the genus Onchocerca. In both cases, the parasites are localized in or near the eye. In one case the worm was located in the cornea and was surgically removed. In the second case, a very marked granulomatous reaction was induced in the retrobulbar space, mimicking an abscess. This eye was enucleated. The worms in both instances were female, and were gravid, i.e. contained microfilariae in utero, indicating that a male worm(s) had been present and mating had occurred. The exact identity of the species of Onchocerca responsible cannot be determined, although the features observed are most like Onchocerca lienalis of cattle. These cases represent the fourth and fifth such cases reported from the US, and are especially interesting because of the unusual location of the worms, the small number of recognized cases, and the similarity to a recent zoonotic human infection.
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Onchocerca lupi causes canine and human infestation in Europe and overseas.
“The recent finding of Onchocerca lupi causing canine and human infestation in Europe and overseas renders the picture of VBH even more complicated.”
From Vector-borne helminths of dogs and humans in Europe (2013) · cites this paper as [29]
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- Authors
- Eberhard, M. L., Ortega, Y., Dial, S., Schiller, C. A., Sears, A. W., & Greiner, E.
- Affiliations
- Centers for Disease Control and Prevention (US)
- California Animal Hospital (US)
- University of Florida (US)
- Corresponding author
- Eberhard, Mark L
- Venue
- Veterinary Parasitology
- Publisher
- Elsevier BV
- Published
- 2000-07
- Volume
- 90
- Issue
- 4
- Pages
- 333-338
- ISSN
- 0304-4017 (ISSN-L)
- OpenAlex
- W2079039347
- Cited by
- 57
- References
- 15
- Citations by year
- 2025: 2 · 2023: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 8 · 2014: 2 · 2013: 4 · 2012: 4
- FWCI
- 3.14
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Veterinary Parasitology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
- Health Sciences › Veterinary › Small Animals › Helminth infection and control
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Research on Leishmaniasis Studies
- Keywords
- Onchocerca, dogs, filarial nematodes, Onchocerca lienalis, enucleation, microfilariae, zoonoses
- MeSH terms
- Animals, Arizona, California, Cornea, Dog Diseases, Dogs, Female, Male, Onchocerca, Eye Enucleation, Granuloma, Foreign-Body, Onchocerciasis, Ocular
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