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Seroprevalence and associated factors of Leishmania infantum in small ruminants in Portugal

2026Artigo científico Acesso aberto
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datacite.subject.fosCiências Agrárias::Ciências Veterinárias
datacite.subject.fosCiências Agrárias::Outras Ciências Agrárias
datacite.subject.sdg02:Erradicar a Fome
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorQuintas, Hélder
dc.contributor.authorLebrero, María Eugenia
dc.contributor.authorJacob-Ferreira, João
dc.contributor.authorQuilez, Pablo
dc.contributor.authorGuallar, David
dc.contributor.authorCoelho, Ana Cláudia
dc.contributor.authorLacasta, Delia
dc.contributor.authorMarteles-Aragüés, Diana
dc.contributor.authorRuíz, Héctor
dc.contributor.authorArcaute, Marta Ruiz de
dc.contributor.authorCardoso, Luís
dc.contributor.authorVillanueva-Saz, Sergio
dc.date.accessioned2026-06-16T11:03:01Z
dc.date.available2026-06-16T11:03:01Z
dc.date.issued2026
dc.description.abstractBackground Leishmaniosis is a vector-borne disease caused by Leishmania parasites transmitted by infected phle- botomine sand flies. In the epidemiological study reported here, we investigated exposure to Leishmania infantum in sheep (Ovis aries) and goats (Capra hircus) in mainland Portugal. Methods A cross-sectional serosurvey was conducted in three geographical regions of Portugal (Tras-os-Montes, Centre and South), with sampling in 19 municipalities and 87 localities. Results A total of 2124 small ruminants were tested (1820 sheep and 304 goats). Overall seroprevalence was 21.3% (453/2124; 95% confidence interval [CI] 19.6-23.1), with higher seropositivity in sheep than goats (22.4% vs 15.1%). Univariable analysis showed that ruminant species and reported contact between goats and sheep were statistically associated with seropositivity, but these associations were not detected in the subset of 1851 animals used for mul- tivariable modelling. Rather, multivariable logistic regression analysis (n = 1851) showed that several management and biosecurity factors were linked to an increased risk of infection. Increased odds of infection were observed in non- autochthonous breeds (odds ratio [OR] 2.163), holdings without goat-sheep contact (OR 1.920), high aeration/ventila- tion (OR 1.964), suboptimal drinking fountai n hygiene (OR up to 6.221), biannual versus annual disinfection (OR 2.459) and not using equipment from other farms (OR 2.189). Permanent confinement was protective (OR 0.415). Conclusions These results indicate widespread exposure of Portuguese flocks to L. infantum, highlighting the rel- evance of husbandry practices. Further research is needed to determine whether sheep and goats develop clinical disease and to clarify the implications for animal and public health.eng
dc.description.sponsorshipThis study was partially funded by the research group’s own resources and partially supported by the Cátedra UNIZAR–UNITED PET FOOD (Spain) and the Cátedra UNIZAR–URANO DIAGNOSTICS.
dc.identifier.citationQuintas, Helder; Lebrero, Maria Eugenia; Jacob-Ferreira, Joao; Quilez, Pablo; Guallar, David; Coelho, Ana Claudia; Lacasta, Delia; Marteles-Aragues, Diana; Ruiz, Hector; Ruiz de Arcaute, Marta; Cardoso, Luis; Villanueva-Saz, Sergio (2026). Seroprevalence and associated factors of Leishmania infantum in small ruminants in Portugal. Parasites & Vectors. ISSN 1756-3305. 19:1, p. 1-11
dc.identifier.doi10.1186/s13071-026-07424-y
dc.identifier.issn1756-3305
dc.identifier.urihttp://hdl.handle.net/10198/36891
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.relation.ispartofParasites & Vectors
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectGoat
dc.subjectELISA
dc.subjectLeishmania infantum
dc.subjectPortugal
dc.subjectSerology
dc.subjectSheep
dc.titleSeroprevalence and associated factors of Leishmania infantum in small ruminants in Portugaleng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage11
oaire.citation.issue1
oaire.citation.startPage1
oaire.citation.titleParasites & Vectors
oaire.citation.volume19
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameQuintas
person.givenNameHélder
person.identifier1486884
person.identifier.ciencia-id6018-8BBD-80AB
person.identifier.orcid0000-0002-6934-1669
person.identifier.scopus-author-id35796342900
relation.isAuthorOfPublication068e74bc-656d-4fd1-93ed-f7346baa3b69
relation.isAuthorOfPublication.latestForDiscovery068e74bc-656d-4fd1-93ed-f7346baa3b69

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