Bacterial species associated with interdigital phlegmon outbreaks in Finnish dairy herds

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Kontturi , M , Junni , R , Simojoki , H , Malinen , E , Seuna , E , Klitgaard , K , Kujala-Wirth , M , Soveri , T & Pelkonen , S 2019 , ' Bacterial species associated with interdigital phlegmon outbreaks in Finnish dairy herds ' , BMC Veterinary Research , vol. 15 , 44 .

Title: Bacterial species associated with interdigital phlegmon outbreaks in Finnish dairy herds
Author: Kontturi, Miia; Junni, Reijo; Simojoki, Heli; Malinen, Erja; Seuna, Eija; Klitgaard, Kirstine; Kujala-Wirth, Minna; Soveri, Timo; Pelkonen, Sinikka
Contributor organization: Production Animal Medicine
Faculty of Veterinary Medicine
Departments of Faculty of Veterinary Medicine
Helsinki One Health (HOH)
Ruminant health
Date: 2019-01-29
Language: eng
Number of pages: 12
Belongs to series: BMC Veterinary Research
ISSN: 1746-6148
Abstract: BackgroundSevere outbreaks of bovine interdigital phlegmon (IP) have occurred recently in several free stall dairy herds in Finland. We studied the aetiology of IP in such herds, and the association of bacterial species with the various stages of IP and herds of various morbidity of IP. Nineteen free stall dairy herds with IP outbreaks and three control herds were visited and bacteriological samples collected from cows suffering from IP (n=106), other hoof diseases (n=58), and control cows (n=64). The herds were divided into high morbidity (morbidity 50%) and moderate morbidity groups (9-33%) based on morbidity during the first two months of the outbreak.ResultsF. necrophorum subspecies necrophorum was clearly associated with IP in general, and T. pyogenes was associated with the healing stage of IP. Six other major hoof pathogens were detected; Dichelobacter nodosus, Porphyromonas levii, Prevotella melaninogenica, Treponema spp. and Trueperella pyogenes. Most of the samples of acute IP (66.7%) harboured both F. necrophorum and D. nodosus. We found differences between moderate morbidity and high morbidity herds. D. nodosus was more common in IP lesion in high than in moderate morbidity herds.ConclusionsOur result confirms that F. necrophorum subspecies necrophorum is the main pathogen in IP, but also T. pyogenes is associated with the healing stage of IP. Our results suggest that D. nodosus may play a role in the severity of the outbreak of IP, but further research is needed to establish other bacteriological factors behind these severe outbreaks.
Subject: Interdigital phlegmon
Infectious hoof diseases
Fusobacterium necrophorum
Dichelobacter nodosus
Foot rot
Interdigital necrobacillosis
413 Veterinary science
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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