This page quotes a published document. Everything below in quotation marks is copied word for word from https://capcvet.org/guidelines/filaroides-hirthi/, 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 hirthi, section by section: the opening sentences of 8 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 hirthi, at https://capcvet.org/guidelines/filaroides-hirthi/. 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 hirthi 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 hirthi – canine lungworm. Filaroides hirthi lives threaded through the lung parenchyma of dogs and other canids.
Disease
Usually the infection is not associated with clinical signs. Severe infections may show radiographic changes.
Prevalence
Periodically appears in some kennels or in individual dogs.
Diagnosis
Diagnosis is made by finding the characteristic larvae in the feces or bronchoalveolar lavage. The larvae have a constriction and a kink just posterior to the end of the tail.
Treatment
Treatment is difficult. Albendazole 25mg/kg twice daily for 5 days has been shown effective against F. hirthi infection (Georgi et al., 1978).
Control and Prevention
In breeding kennels that have a serious problem, it may be necessary to derive the puppies by caesarian section and foster mothers.
Public Health Considerations
No human health hazard appears to be associated with Filaroides hirthi .
Continue reading public health considerations on capcvet.org
Sources
- capc-filaroides-hirthiCAPC · retrieved 2026-09-16
“CAPC Recommends: Filaroides hirthi 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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