Canine ocular onchocercosis in Hungary
Abstract
An adult male mongrel dog that had spent its entire life in Hungary, was found to have infection with filaroid nematodes of the genus Onchocerca. The gravid male and female parasites were embedded in bean-sized granulomatous masses on the conjunctiva and the sclera of both eyes. The cuticle of females consisted of two separated layers in longitudinal sections, the external layer bearing ridges and the internal layer showing striations. The ridges were marked, rounded in shape, and the ratio of body diameter to the distance between ridges varied between 7:1 and 10:1. At midbody of the worms, two striations could be seen between each pair of ridges: one under every ridge and one between neighbouring ridges. Numerous exceptionally small (96.4 microm x 6.4 microm) microfilariae were seen in the uteri of females and the surrounding tissues and isolated from skin biopsy materials. The morphology and location of the parasite and histopathological lesions of the Hungarian case were similar to that described in dogs in the United States. This case is the first documented ocular Onchocerca infection in dogs outside the western United States. Thus, onchocercosis should be considered in the differential diagnosis of ocular and periocular nodules in dogs also in Europe.
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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 [23]
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- Authors
- Széll, Z., Erdélyi, I., Sréter, T., Albert, M., & Varga, I.
- Affiliations
- Magyar Agrár- és Élettudományi Egyetem (HU)
- Corresponding author
- Sréter, T
- Venue
- Veterinary Parasitology
- Publisher
- Elsevier BV
- Published
- 2001-06
- Volume
- 97
- Issue
- 3
- Pages
- 245-251
- ISSN
- 0304-4017 (ISSN-L)
- OpenAlex
- W2031438824
- Cited by
- 55
- References
- 20
- Citations by year
- 2025: 1 · 2023: 3 · 2022: 2 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 3 · 2015: 7 · 2014: 1 · 2013: 3 · 2012: 4
- FWCI
- 2.77
- 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, ocular infection, conjunctival granuloma, microfilariae, Hungary
- MeSH terms
- Animals, Dog Diseases, Dogs, Eye, Female, Hungary, Male, Onchocerca, Onchocerciasis, Ocular
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