Cited by 58Parasitic Diseases Research and TreatmentHelminth infection and controlResearch on Leishmaniasis Studies

Evidences of increasing risk of dirofilarioses in southern Italy

Giangaspero, A., Marangi, M., Latrofa, M. S., Martinelli, D., Traversa, D., Otranto, D., Genchi, C.·2013·Parasitology Research

Abstract

Given the spread of Aedes albopictus from northern to southern Italy, and the lack of updated data on Dirofilaria infections, this study was carried out to assess the infection risk for dogs and cats in Apulia region. During a 2-year study, 175 A. albopictus female specimens and samples of blood from 427 dogs (309 privately owned dogs and 118 shelter dogs) and 12 cats were collected. All blood samples were subjected to a modified Knott method, to a test for the detection of circulating Dirofilaria immitis antigen, and to a Dirofilaria species-specific real-time PCR for the simultaneous detection of D. immitis and Dirofilaria repens, targeting on partial cytochrome oxidase subunit 1 and internal transcribed spacer-2, respectively. Two abdomen and one thorax pools from A. albopictus were positive for D. immitis, with minimum infection rates of 1.14 and 0.51, respectively, and a probability of a single positive specimen to be infected of P = 0.6 % (95 % confidence interval (CI) = 0.12-1.73). Out of 439 examined subjects, 22 (5.0 %) tested positive for Dirofilaria spp. in at least one diagnostic test. A specific D. immitis infestation rate of 3.5 % was found among the privately owned dogs, while shelter dogs tested positive only for D. repens with a prevalence of 3.4 %; one cat tested molecularly positive for D. immitis. There was a significantly higher rate of positivity among guard dogs for D. immitis (odds ratio, 6.24, 95 % CI, 1.26-25.28; P < 0.05). The increasing risk of D. immitis infection in southern Italy is supported by the noteworthy positivity of A. albopictus populations and the cat. Our data highlight the usefulness to include filarioid infestation in routine diagnosis.

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Crossref · 10.1007/s00436-012-3206-1

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  • In central Italy (Latium, Tuscany, Umbria), canine heartworm prevalence ranged from 0.2 to 6.9%, while in southern Italy it ranged between 0.2 and 44.2%.

    “In Latium, Tuscany, and Umbria (central Italy), prevalence ranged from 0.2 to 6.9% [29,32,33], while in southern Italy, the prevalence ranged between 0.2 and 44.2% [34,35,36,37].”
  • In Italy, culicid vectors of Dirofilaria have been demonstrated in different regions, including Cx. pipiens in north-eastern Italy, Ae. albopictus, Cq. richiardii, Cs. annulate, Cx. pipiens, and Och. caspius in southern Italy, and Ae. albopictus in Pelagie Archipelago.

    “In Italy, several studies have continued to demonstrate the existence of culicid vectors of Dirofilaria in different regions of the country, such as Cx. pipiens in north-eastern Italy [150], Ae. albopictus, Cq. richiardii, Cs. annulate, Cx. pipiens, and Och. caspius in southern Italy [34,151], and Ae. albopictus in Pelagie Archipelago [40].”
  • The southward changing pattern of HW has been detailed in previous studies.

    “The southward changing pattern of HW has been detailed in previous studies [26–29].”
  • The prevalence of Dirofilaria spp. in cats varies from 0 to 33% across Europe.

    “The prevalence of Dirofilaria spp. in cats varies from 0 to 33% across Europe [11, 30–40].”
  • Among the culicid mosquito species, Culex pipiens, Cx. quinquefasciatus and Ae. albopictus are known to be infected with Wolbachia and considered as vectors for Dirofilaria.

    “Among the culicid mosquito species, Culex pipiens, Cx. quinquefasciatus and Ae. albopictus are known to be infected with Wolbachia [32, 67] and considered as vectors for Dirofilaria [13–15, 28, 45, 50, 69].”

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Authors
Giangaspero, A., Marangi, M., Latrofa, M. S., Martinelli, D., Traversa, D., Otranto, D., & Genchi, C.
Affiliations
  • University of Foggia (IT)
  • University of Bari Aldo Moro (IT)
  • University of Teramo (IT)
  • University of Milan (IT)
Corresponding author
Giangaspero, A.
Venue
Parasitology Research
Published
2012-12-07
Volume
112
Issue
3
Pages
1357-1361
ISSN
  • 0044-3255 (ISSN-L)
  • 0932-0113
  • 1432-1955
OpenAlex
W2060516176
Cited by
58
References
23
Citations by year
2026: 3 · 2025: 3 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 6 · 2018: 3 · 2017: 4 · 2016: 4 · 2015: 9 · 2014: 5 · 2013: 3
FWCI
3.75
Type
journal article
Language
en
Open access
closed
Locations
  • Parasitology Research (publishedVersion)
  • PubMed (publishedVersion)
  • UniTERAMO Research Catalog (University of Teramo) (submittedVersion)
  • CINECA IRIS Institutional Research Information System (University of Bari Aldo Moro) (submittedVersion)
Funders
Fondazione del Monte di Bologna e Ravenna
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 immitis, Dirofilaria repens, Aedes albopictus, dogs, cats, infection risk, Apulia, guard dogs, vector competence, real-time PCR, circulating antigens
MeSH terms
Aedes, Animals, Antigens, Helminth, Cat Diseases, Cats, Dirofilaria, Dirofilariasis, Dog Diseases, Dogs, Female, Immunoassay, Italy, Prevalence, DNA, Helminth, Risk Assessment, Real-Time Polymerase Chain Reaction

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