Systemic Streptococcus dysgalactiae Subspecies              equisimilis Infection in a Yorkshire Pig with Severe          Disseminated Suppurative Meningoencephalomyelitis

Kazufumi KASUYA; Eiji YOSHIDA; Rieko HARADA; Mio HASEGAWA; Hiroyuki OSAKA; Masaharu KATO; Tomoyuki SHIBAHARA

doi:10.1292/jvms.13-0526

Pathology

Systemic Streptococcus dysgalactiae Subspecies equisimilis Infection in a Yorkshire Pig with Severe Disseminated Suppurative Meningoencephalomyelitis

Kazufumi KASUYA, Eiji YOSHIDA, Rieko HARADA, Mio HASEGAWA, Hiroyuki OSAKA, Masaharu KATO, Tomoyuki SHIBAHARA

Author information

Kazufumi KASUYA
Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Eiji YOSHIDA
Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Rieko HARADA
Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Mio HASEGAWA
Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Hiroyuki OSAKA
Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Masaharu KATO
Animal Inspection Division, Quarantine Department, Animal Quarantine Service, 11–1 Haramachi, Isogo, Yokohama, Kanagawa 235–0008, Japan
Tomoyuki SHIBAHARA
Pathology and Pathophysiology Research Division, National Institute of Animal Health, 3–1–5 Kannondai, Tsukuba, Ibaraki 305–0856, Japan

Keywords: Streptococcus dysgalactiae subspecies equisimilis, swine, systemic infection

JOURNAL FREE ACCESS

2014 Volume 76 Issue 5 Pages 715-718

DOI https://doi.org/10.1292/jvms.13-0526

Browse “Advance online publication” version

Details

Abstract

An 18-week-old female breeding Yorkshire pig displayed symptoms of astasia and subsequently died. Histologically, severe disseminated suppurative meningoencephalomyelitis was detected, as were numerous myocardial microabscesses. Gram-positive cocci were detected in these suppurative lesions, and these cocci reacted with an antibody against Streptococcus C group species. Gram-positive cocci were isolated from the liver, spleen, kidney, heart, lungs, pleural abscess and articular fluid of the right tarsal joint. The isolates were β-hemolytic, categorized into Lancefield group C and were identified as Streptococcus dysgalactiae subspecies equisimilis by analysis of the 16S ribosomal DNA sequence. This is the first report of systemic S. equisimilis infection in a pig with severe disseminated suppurative meningoencephalomyelitis.

Corresponding author

Register with J-STAGE for free!