Cited by 19Parasitic Diseases Research and TreatmentHelminth infection and controlResearch on Leishmaniasis Studies

Human and Animal Dirofilariasis in Southeast of France

Open access
Laidoudi, Younes, Otranto, Domenico, Stolowy, Natacha, Amrane, Sophie, Santhakumari Manoj, Ranju Ravindran, Polette, Laurine, Watier-Grillot, Stéphanie, Mediannikov, Oleg +2 more·2021·Microorganisms

Abstract

Dirofilariasis is one of the oldest known zoonotic infections of humans mainly caused by the filarial parasites of the species Dirofilaria immitis and Dirofilaria repens, which primarily infect dogs. A five-year survey (2017 to 2021) was conducted among the dog population to assess the molecular prevalence of Dirofilaria spp. in southeast France. Morphological and genetic analysis were performed on filaroids from dogs and one infected woman from the studied area. A total of 12 (13%) dogs scored molecularly positive for Dirofilaria spp. of which nine carried blood microfilariae. Ocular dirofilariasis was detected in a 79-year-old woman with no travel history. Both electron microscopy and molecular sequencing identified the worm in the human case as D. repens. Molecularly, D. repens isolates were identical in the human and dog cases, representing the only genotype reported so far in France. Despite the distribution of this genotype through all Europe, it was grouped separately with the other two European genotypes and with Asian ones. As in almost all previous human cases in France, D. repens parasites were mainly recovered from the ocular region of patients and were geographically concentrated in the southeastern regions. Data demonstrate the sympatric occurrence of D. immitis and D. repens with high risk of infection to human and dog populations in these investigated geographical areas, thereby underlining the urgent need to implement preventive chemoprophylactic strategies and vector control to reduce the risk of these filaroids in dog and human populations.

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Authors
Laidoudi, Y., Otranto, D., Stolowy, N., Amrane, S., Santhakumari Manoj, R. R., Polette, L., Watier-Grillot, S., Mediannikov, O., Davoust, B., & L'Ollivier, C.
Affiliations
  • Aix-Marseille Université (FR)
  • Bu-Ali Sina University (IR)
  • Assistance Publique Hôpitaux de Marseille (FR)
  • Méditerranée Infection Foundation (FR)
  • IRD, AP-HM, MEPHI, IHU Méditerranée lnfection, Aix Marseille University, 19-21, Boulevard Jean Moulin, 13005 Marseille, France
  • Service de Santé des Armées (FR)
Venue
Microorganisms
Publisher
MDPI AG
Published
2021-07-20
Volume
9
Issue
7
Pages
1544
ISSN
2076-2607 (ISSN-L)
OpenAlex
W3186193687
Cited by
18
References
61
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 5 · 2021: 2
FWCI
0.95
Type
journal article
Language
en
Open access
Locations
  • Microorganisms (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • CINECA IRIS Institutional Research Information System (University of Bari Aldo Moro) (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-10-IAHU-0003)
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
dirofilariasis, Dirofilaria repens, Dirofilaria immitis, canine heartworm disease, zoonotic filariasis, ocular dirofilariasis, sympatric occurrence, southeastern France, chemoprophylaxis, vector control

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