This page quotes a published document. Everything below in quotation marks is copied word for word from https://capcvet.org/guidelines/eucoleus-aerophilus/, 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 Eucoleus aerophilus, section by section: the opening sentences of 7 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, Eucoleus aerophilus, at https://capcvet.org/guidelines/eucoleus-aerophilus/. 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: Eggs with anastomosing ridges on the outer shell and bipolar plugs are found in the feces and sputum of infected animals. Earthworms may serve as paratenic hosts.
Species
Canine Feline Eucoleus aerophilus (syn. Capillaria aerophila )– feline and canine bronchial capillarid.
Disease
Light infections are usually inapparent. Young animals are the most susceptible.
Prevalence
Not uncommon in either dogs or cats in North America, South America and Europe. One study found 0.4% of 6458 canine fecal samples in the US were positive for Eucoleus spp.
Diagnosis
Diagnosis is made by identification of the eggs in the sputum or feces. The eggs in the feces must be differentiated from those of Trichuris spp.
Treatment
Ivermectin or benzimidazoles have been used. One study showed efficacy using imidacloprid 10%/moxidectin 1% topical in cats.
Public Health Considerations
There have been very rare reports of human infection with this parasite from Russia and Morocco.
Continue reading public health considerations on capcvet.org
Sources
- capc-eucoleus-aerophilusCAPC · retrieved 2026-09-16
“CAPC Recommends: Eggs with anastomosing ridges on the outer shell and bipolar plugs are found in the feces and sputum of infected animals. Earthworms may” (Synopsis)
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