Retrospective study on the distribution of Dirofilaria immitis in dogs in Hungary
Abstract
Europe has experienced the spreading of vector-borne helminths including heartworms (Dirofilaria immitis) from the Mediterranean countries towards the northern ones in the past decades. Recently, the establishment of D. immitis was confirmed in Hungary on the basis of period prevalence studies involving dogs, red foxes (Vulpes vulpes) and golden jackals (Canis aureus). The aim of our retrospective study was to describe the spatial distribution of the parasite and the time course of spreading of D. immitis in Hungary. Necropsy records of 2622 dogs received at our laboratories from 2001 to 2015 were reviewed for heartworm infections. The locality of origin of animals was recorded in a geographic information system database and compared to the results of the period prevalence study involving wild canids. Autochthonous heartworm infection was detected in 27 dogs. The time course analysis indicates that the parasite established in Hungary in 2007. As temperature is one of the most important determinants of the distribution of D. immitis, the climate of the Great Hungarian Plain is the most suitable region for the establishment of D. immitis in Hungary. Our studies revealed that the Great Hungarian Plain became a D. immitis endemic region for 2015. Nevertheless, sporadic cases in wild canids and dogs also occur in other regions of the country.
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In Hungary, the first autochthonous case was detected in 2009, and studies showed low-moderate prevalence between 0.36 and 8.1%, co-infections with D. repens (3.2%), and high prevalence (51%) in Szeged.
“In Hungary, where the first autochthonous case was detected in 2009 [109], the number of epidemiological studies has increased considerably. There are studies that showed low-moderate prevalence between 0.36 and 8.1% [110,111,112,113] and co-infections with D. repens (3.2%) [111], while a high prevalence (51%) was reported in Szeged, a city close to Serbia and Romania [114].”
From What has happened to heartworm disease in Europe in the last 10 years? (2022) · cites this paper as [114]
The prevalence of D. immitis in this study (11.3%) is higher than that found in earlier serological and retrospective surveys.
“The prevalence of D. immitis obtained in this study is higher (11.3%) than that found in earlier serological (Farkas et al. 2014) and retrospective surveys based on the necropsy records of 2622 dogs (Bacsadi et al., 2016), indicating that the number of infected dogs has been increasing in the country.”
From The current situation of canine dirofilariosis in Hungary (2020) · cites this paper as Bacsadi et al., 2016
Hungary is one of the countries with the highest prevalence for dirofilariosis in Europe.
“which is also one of the countries with the highest prevalence for dirofilariosis in Europe [26].”
From The Incidence of Dirofilaria immitis in Shelter Dogs and Mosquitoes in Austria (2021) · cites this paper as [26]
Most of the dogs originating from Hungary in the present study were from the region of the Great Hungarian Plain, which has been considered an endemic region since 2011.
“Most of the dogs originating from Hungary in the present study were from the region of the Great Hungarian Plain, which has been considered an endemic region since 2011 (Bacsadi et al. 2016).”
From Current trends in canine dirofilariosis in Austria-do we face a pre-endemic status? (2020) · cites this paper as Bacsadi et al. 2016
Since that time, examinations of dogs, red foxes, golden jackals, and one ferret revealed that D. immitis is endemic in Hungary, and the Great Hungarian Plain is hyperendemic.
“Since that time, the examinations of dogs [120,125,126,127,128], red foxes, golden jackals (Canis aureus) [129], and one ferret (Mustela furo) [130] revealed that D. immitis is endemic in the country, and the Great Hungarian Plain is hyperendemic”
From Dirofilaria spp. and Angiostrongylus vasorum: current risk of spreading in Central and Northern Europe. (2021) · cites this paper as [127]
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- Authors
- Bacsadi, Á., Papp, A., Szeredi, L., Tóth, G., Nemes, C., Imre, V., Tolnai, Z., Széll, Z., & Sréter, T.
- Affiliations
- National Food Chain Safety Office (HU)
- Corresponding author
- Sréter, T.
- Venue
- Veterinary Parasitology
- Publisher
- Elsevier BV
- Published
- 2016-04
- Volume
- 220
- Pages
- 83-86
- ISSN
- 0304-4017 (ISSN-L)
- OpenAlex
- W2297578779
- Cited by
- 27
- References
- 15
- Citations by year
- 2026: 2 · 2025: 2 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 6 · 2018: 5 · 2017: 2 · 2016: 1
- FWCI
- 4.31
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Veterinary Parasitology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Infectious Diseases › Parasitic Diseases Research and Treatment
- Health Sciences › Veterinary › Small Animals › Helminth infection and control
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Research on Leishmaniasis Studies
- Keywords
- Dirofilaria immitis, canine heartworm disease, spatial distribution, autochthonous infection, period prevalence, wild canids, red fox, golden jackal, Great Hungarian Plain, Hungary
- MeSH terms
- Animals, Dirofilaria immitis, Dirofilariasis, Dog Diseases, Dogs, Hungary, Retrospective Studies, Prevalence
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