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First Detection of Salmonella enterica Serovar Choleraesuis in Free Ranging European Wild Boar in Sweden

Ernholm, Linda and Sternberg Lewerin, Susanna and Agren, Erik and Stahl, Karl and Hulten, Cecilia (2022). First Detection of Salmonella enterica Serovar Choleraesuis in Free Ranging European Wild Boar in Sweden. Pathogens. 11 :7 , 723
[Research article]

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Abstract

Following the first detection of Salmonella enterica subsp. enterica, serovar Choleraesuis (S. Choleraesuis) in a Swedish pig herd for more than 40 years and subsequent detection of the same serotype in an enclosure with kept wild boar, a national surveillance for S. Choleraesuis in free living wild boar was launched. A total of 633 wild boar sampled within the active and the enhanced passive surveillance were examined for Salmonella enterica serovars by culture. Of these, 80 animals were culture positive for S. Choleraesuis var. Kunzendorf. All positive animals, including those in the original outbreaks, originated from counties located in the southern and eastern parts of Sweden. Fifty-eight isolates were selected for sequence typing, revealing a relatively homogenous population of S. Choleraesuis with two distinct genetic clusters containing isolates from the southern counties in one and the counties further northeast in the other. Sequenced isolates from domestic pig farms all clustered with wild boar in the same region. S. Choleraesuis appears highly contagious in dense wild boar populations, making it a relevant model for other infectious diseases that may be transmitted to pigs. The many potential routes of introduction and spread of S. Choleraesuis warrant further investigations in order to prepare for other disease threats.

Authors/Creators:Ernholm, Linda and Sternberg Lewerin, Susanna and Agren, Erik and Stahl, Karl and Hulten, Cecilia
Title:First Detection of Salmonella enterica Serovar Choleraesuis in Free Ranging European Wild Boar in Sweden
Series Name/Journal:Pathogens
Year of publishing :2022
Volume:11
Number:7
Article number:723
Number of Pages:10
Publisher:MDPI
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Fish and Wildlife Management
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Pathobiology
Keywords:wildlife/livestock interface, surveillance, Salmonella Choleraesuis, wild boar, Sus scrofa
URN:NBN:urn:nbn:se:slu:epsilon-p-118568
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118568
Additional ID:
Type of IDID
DOI10.3390/pathogens11070723
Web of Science (WoS)000834493800001
ID Code:28629
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Department of Biomedical Science and Veterinary Public Health
Deposited By: SLUpub Connector
Deposited On:29 Aug 2022 11:43
Metadata Last Modified:29 Aug 2022 11:51

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