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Updated: Jan 28, 2026

Severe Burn Injury in a Swine Model for Clinical Dressing Assessment
Published on: November 6, 2018
High rate misidentification of biochemically determined Streptococcus isolates from swine clinical specimens
Nattakan Meekhanon1, Sarawan Kaewmongkol1, Pichai Jirawattanapong2
1Department of Veterinary Technology, Faculty of Veterinary Technology, Kasetsart University, Bangkok 10900, Thailand.
Abstract:
In this study, 22 bacterial isolates from swine necropsy specimens, which were biochemically identified as Streptococcus suis and other Streptococcus species, were re-examined using species-specific PCR for authentic S. suis and 16S rRNA gene sequencing for the verification of the former judge. Identification of S. suis on the basis of biochemical characteristics showed high false-positive (70.6%) and false-negative (60%) rates. The authentic S. suis showed various capsular polysaccharide synthesis gene types, including type 2 that often isolated from human cases. Five of 22 isolates did not even belong to the genus Streptococcus. These results suggested that the misidentification of the causative pathogen in routine veterinary diagnosis could be a substantial obstacle for the control of emerging infectious diseases.
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