ArticleParasites & vectors2024
Twenty-year evolution of Leishmania infantum infection in dogs in Valdeorras (Galicia, Northwestern Spain): implication of climatic factors and preventive measures.
Article in Parasites & vectors, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Unveiling prognostic indicators in canine leishmaniosis: two decades of evidence.Parasites & vectors · 2025Article
- Seroprevalence, clinical investigation, and risk factors associated withJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2025Article
- Evaluating the stability of antibody titres against Leishmania infantum determined by IFAT in long-term stored canine frozen samples.Parasites & vectors · 2025Article
- Molecular Prevalence ofPathogens (Basel, Switzerland) · 2025Article
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Authors and funding
11 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundAbiotic factors play a significant role in the evolution of Leishmania infantum infection due to its vectorial nature. This study aims to assess the evolution in the detection of new L. infantum infection cases in Valdeorras (Ourense, Northwestern Spain) over a 20-year period and how different climatic variables and preventive measures may have affected it.
methodsIndirect immunofluorescence antibody tests (IFAT) were performed on serum samples collected from dogs attending the 'Servicios Veterinarios de Sil' veterinary clinic (Valdeorras, Northwestern Spain) between May 2003 and April 2023 to detect L. infantum exposure. The percentage of new cases of L. infantum infection was calculated from May of one year to April of the following year. Climatic conditions in the region, global sales of ectoparasiticides and the number of vaccines against L. infantum delivered in the veterinary clinic from 2003 to 2022 were recorded. Statistical analyses were conducted to determine the associations between these factors and the percentage of new cases of L. infantum infection.
resultsA total of 2909 dogs were assessed, and 3785 IFAT tests were performed between May 2003 and April 2023. The mean percentage of new seropositive cases over the 20-year period studied was 21.65 ± 10.8%, with a decline from the beginning to the end of the period studied. The percentage was significantly higher between May 2003 and April 2008 compared with the other periods (May 2008 to April 2013, May 2013 to April 2018 and May 2018 to April 2023). There was a positive correlation between the percentage of new cases of L. infantum infection and the maximum relative humidity in winter. Conversely, there was a negative correlation between the percentage of new cases and sales of ectoparasiticides and vaccination against L. infantum.
conclusionsThis study is one of the longest evaluations of the evolution of L. infantum infection in a fixed location and its association with external factors including climatic conditions and preventive measures. The results confirm that Valdeorras is a high-risk area for L. infantum infection. The use of ectoparasiticides and vaccines against L. infantum has been shown to play a significant role in preventing L. infantum infection, highlighting the crucial role of veterinarians in the fight against this disease.
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