This page quotes a published document. Everything below in quotation marks is copied word for word from https://capcvet.org/guidelines/filaroides-osleri/, published by CAPC and retrieved on 2026-09-16. The quotations are excerpts; the document itself is linked and is the authority. Nothing has been reworded.
This page quotes the Companion Animal Parasite Council guideline for Filaroides osleri, section by section: the opening sentences of 6 sections, copied without change and linked to the guideline, which was retrieved on 2026-09-16. The guideline itself is the authority and carries the full text.
The guideline
Companion Animal Parasite Council, Filaroides osleri, at https://capcvet.org/guidelines/filaroides-osleri/. Retrieved 2026-09-16. Each heading below is the guideline’s own, and the quotation under it is how that section begins. The full section, and the species tabs where the guideline gives them, are on the linked page.
Synopsis
CAPC Recommends Filaroides osleri can be easily between dogs in kennels because larvae are immediately infectious and the life cycle is direct. Diagnose this parasite using feces or BAL fluid and fecal flotation or sedimentation.
Species
Canine Filaroides osleri – canine tracheal and bronchial nodular worm. Filaroides osleri is a parasite that produces hemorrhagic or granular, wart-like nodules in the trachea and bronchi of the dog and other canids.
Disease
The major sign is the spasmodic attack of a hard, dry cough started by exercise or exposure to cold air. Attacks are not induced by pressure upon the larynx.
Diagnosis
The lesions observed by bronchoscope are pathognomonic. The infection can also be diagnosed by finding the larvae in fecal flotation using centrifugation.
Treatment
Many anthelmintics have been used to treat F. osleri. Fenbendazole 50mg/kg for 10 days has been shown effective in recession of nodules and clinical symptoms (Yao et al., 2011).
Control and Prevention
Dogs that are infected should be isolated from other dogs because of the infectious nature of the larvae.
Sources
- capc-filaroides-osleriCAPC · retrieved 2026-09-16
“CAPC Recommends Filaroides osleri can be easily between dogs in kennels because larvae are immediately infectious and the life cycle is direct. Diagnose this parasite” (Synopsis)
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