Molecular detection of E. aerophilus in Polish dogs
The respiratory nematode Eucoleus aerophilus has been identified in dogs across Poland using a newly developed real-time quantitative PCR (qPCR) assay. While the parasite—also known as Capillaria aerophila—is found in wild and domestic carnivores throughout 24 European countries with an average prevalence of 3.5%, molecular confirmation of its presence in the Polish canine population had previously been lacking. Researchers examining 198 fecal samples determined a 7.6% prevalence rate using the molecular method, significantly higher than the 4.0% detection rate achieved through conventional PCR.
Comparing diagnostic sensitivity
The study highlights a clear gap between traditional coproscopic techniques and modern molecular diagnostics. While conventional PCR identified the parasite in 4.0% of cases, the qPCR assay proved more sensitive, identifying the infection in 7.6% of the tested population. Previous investigations in the region relied heavily on coproscopic detection and morphological identification of Capillariidae eggs, which often struggle to distinguish between closely related species.
Did you know?
Trichuris vulpis remains the most frequently detected parasite in this population, appearing in 10.5% of fecal samples, while general Capillariidae eggs were found in 7.0%.
Sequence analysis identifies four distinct E. aerophilus haplotypes
Sequence analysis confirmed the presence of four distinct E. aerophilus haplotypes within the samples: EaPL1, EaPL1A, EaPL6, and EaPL10. Three of these haplotypes had been documented previously in red foxes within Poland. However, the study marked the first time the EaPL1A haplotype was detected in the country.
Common questions regarding canine respiratory parasites
Why is molecular testing preferred over traditional stool tests?
Molecular tests like qPCR provide higher sensitivity and species-specificity compared to standard coproscopic exams, which rely on identifying eggs by sight.
What other parasites were identified during the study?
In addition to E. aerophilus and Trichuris vulpis, researchers identified eggs belonging to Toxocara spp., Taeniidae, and various hookworms.
Is this parasite a risk to humans?
Eucoleus aerophilus is recognized for having zoonotic potential, meaning it can be transmitted from animals to humans, making accurate identification and understanding of its prevalence a significant focus for veterinary and public health researchers.
The study confirms the presence of E. aerophilus in the investigated dog population and emphasizes the necessity of molecular diagnostics for accurate species identification in future epidemiological research.
Keep reading