Prevalence of intestinal helminths of red foxes (Vulpes vulpes) in central Europe (Poland): A significant zoonotic threat
Open accessAbstract
BACKGROUND: The red fox (Vulpes vulpes) is widely distributed in the world; in central Europe, it is the most numerous wild species of the family Canidae. It can play the role of a definitive host for many intestinal parasites, including zoonotic helminths. Poland, with its geographical location (central Europe), is an interesting area for parasitological investigations of this species. The aim of this study was to evaluate and compare the prevalence of intestinal helminths in red foxes in different regions of Poland. METHODS: Intestines of 473 red foxes from four different regions were examined using the sedimentation and counting technique (SCT). In addition, 344 samples of faeces were examined using flotation. RESULTS: Overall, intestinal helminths were found in 98.9% of red foxes. The average prevalence of detected parasites was as follows: Mesocestoides spp. (84.1%); hookworms (67.9%); Alaria alata (61.5%); Toxocara/Toxascaris (49.5%); Taenia spp. (42.5%); Echinococcus multilocularis (25.6%); and Trichuris vulpis (2.3%). The prevalence of the majority of parasite species was similar in each region. Significant differences between regions were observed in the case of E. multilocularis: a low prevalence in the south-western and northern regions (0% and 0.9%, respectively) and a high prevalence in the south-east and northeast (39.3% and 42.7%, respectively). In the case of A. alata, important differences were found between northern (96.5% and 93.7% in northern and northeast regions, respectively) and southern regions (15.2% and 24.7% for south-western and south-east regions, respectively). The percentage of positive samples obtained with coproscopic examination (except for Trichuris) was significantly lower than that obtained with SCT. Analysis of the prevalence estimated in individual regions with the use of both methods (flotation and SCT) showed a high correlation for all parasite species (except for Mesocestoides spp.). The flotation method also allowed us to detect the eggs of the lung nematode Eucoleus aerophilus (syn. Capillaria aerophila) (76.2% of positive foxes). CONCLUSIONS: This study showed a very high percentage of red foxes infected with intestinal helminths in different parts of Poland. Depending on the location, some differences were observed regarding the prevalence of dangerous zoonotic parasites, which should be considered in the assessment of infection risk for humans.
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The prevalence of Mesocestoides spp. in the studied foxes (78.2%) is similar to the mean prevalence in Poland (84.1%) and to the prevalence in southwest Poland (77.3%).
“The percentage of infected foxes is similarly high as in the study conducted recently in different regions of Poland [14] (mean prevalence 84.1%), and it was especially close to the prevalence in the southwest region (77.3%) [14] directly bordering the area investigated in the present study.”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
Prevalence of A. alata strongly depends on the region and presence of water reservoirs.
“Prevalence of A. alata strongly depends on the region and presence of water reservoirs (necessary for the development of intermediate hosts).”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
The prevalence of Toxocara/Toxascaris nematodes in the study was similar to results obtained in other Polish regions and Europe.
“In the present study, the prevalence of these nematodes was similar to results obtained in other Polish regions [14,31,38,41] and Europe [1,2,3,8,10,13,16,19,37].”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
The prevalence of Taenia spp. in the study (53.2%) is similar to that observed in southern, northern, northeastern, and southeastern Poland.
“This result is similar to the prevalence observed in southern, northern, northeastern, and southeastern Poland [14].”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
Significant diversity concerning the prevalence of individual parasite species in different regions of Poland has been shown.
“The significant diversity concerning the prevalence of individual parasite species in different regions of Poland were shown [14].”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
The occurrence of all intestinal helminths in red foxes in Poland has been investigated only in selected areas.
“The occurrence of all intestinal helminths in red foxes in Poland were investigated only in selected areas [14,31].”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
Free-living red foxes are generally infected with more than one species of intestinal helminths, most often three or four coinfecting parasites.
“It must be stressed that free-living red foxes are generally infected with more than one species of intestinal helminths, most often three or four coinfecting parasites [1,14,23].”
From Distribution of Parasitic Helminths in the Small Intestine of the Red Fox (Vulpes vulpes) (2020) · cites this paper as [14]
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- Authors
- Karamon, J., Dąbrowska, J., Kochanowski, M., Samorek-Pieróg, M., Sroka, J., Różycki, M., Bilska-Zając, E., Zdybel, J., & Cencek, T.
- Affiliations
- National Veterinary Research Institute (PL)
- Corresponding author
- Karamon, Jacek
- ORCID
- Venue
- Parasites & Vectors
- Published
- 2018-07-28
- Volume
- 11
- Issue
- 1
- Pages
- 436-436
- ISSN
- 1756-3305 (ISSN-L)
- PMC
- PMC6064108
- OpenAlex
- W2883779655
- Cited by
- 71
- References
- 53
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 7 · 2023: 10 · 2022: 8 · 2021: 12 · 2020: 10 · 2019: 11 · 2018: 1
- FWCI
- 6.47
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Parasites & Vectors (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Polish Ministry of Science and Higher Education (NN 308 631 938)
- Krajowy Naukowy Osrodek Wiodacy (05-1/KNOW2/2015)
- Topics
- Health Sciences › Medicine › Pathology and Forensic Medicine › Parasitic infections in humans and animals
- Health Sciences › Veterinary › Small Animals › Helminth infection and control
- Physical Sciences › Environmental Science › Ecology › Parasite Biology and Host Interactions
- Keywords
- red fox, intestinal helminths, helminth prevalence, zoonotic parasites, Echinococcus multilocularis, Alaria alata, Mesocestoides, hookworm, Toxocara, Taenia, Eucoleus aerophilus, fecal flotation, parasite detection methods
- MeSH terms
- Animals, Feces, Foxes, Helminthiasis, Animal, Intestinal Diseases, Parasitic, Intestines, Poland, Zoonoses
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