Prevalence of Leptospira antibodies in wild boars (Sus scrofa) from Northern Portugal: Risk factor analysis

H. M. Vale-Goncąlves, J. A. Cabral, M. C. Faria, M. Nunes-Pereira, A. S. Faria, O. Veloso, M. L. Vieira, Md N. Paiva-Cardoso

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Abstract

Leptospirosis is a zoonosis of worldwide distribution, caused by infection with pathogenic spirochaetes of the genus Leptospira. The wild boar (Sus scrofa), an important hunting species in Europe, seems to play a significant role in the epidemiological cycle of leptospirosis. A total of 101 serum samples from wild boar hunted in Northern Portugal were analysed for leptospiral antibodies detection by microscopic agglutination test. Sera were collected during hunting seasons (2011-2013) and tested with 17 different pathogenic serovars of Leptospira. Antibodies against nine serovars were detected in 66 (65·4%) of these sera. Serovars Tarassovi and Altodouro exhibited the highest seroreactivity rates (23·8% and 16·8%, respectively), followed by Autumnalis (7·9%) and Bratislava (6·9%). Age and district of origin were found to be risk factors for the presence of leptospiral antibodies in contrast to gender. From a One Health perspective, this study revealed that wild boar should be considered as a potential source of leptospirosis dissemination for humans and animal species (domestic and wild) in shared environments, particularly in the Trás-os-Montes region.

Original languageEnglish
Pages (from-to)2126-2130
Number of pages5
JournalEpidemiology and Infection
Volume143
Issue number10
DOIs
Publication statusPublished - 10 Jul 2015

Keywords

  • Altodouro
  • Leptospira
  • leptospirosis
  • Northern Portugal
  • serology
  • wild boar

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