제주산 망아지의 Streptococcus equi subsp. zooepidemicus 감염에 의한 뇌막염 증례
A case of meningitis caused by Streptococcus equi subsp. zooepidemicus infection in a foal in Jeju
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In November 2012, a 4-month-old foal with anorexia, neurologic signs with ataxia and death was sub-mitted for necropsy to the diagnostic laboratory of Jeju Self-Governing Provincial Veterinary Research Institute. Grossly, yellowish-white fibrinous materials were seen on the ventral cerebrum, cerebellum, medulla oblongata and cervical spinal cord of the foal. Histologically, severe fibrino-purulent meningitis characterized by the infiltration of neutrophils and fibrionous exudates with bacterial colonies were pre-sented in cerebrum, cerebellum, brain stem and cervical spinal cord. In the bacterial isolation using me-ningeal exudate, the small white colonies on blood agar plate with β-hemolysis were observed. Isolated bacteria were Gram-positive cocci and confirmed as Streptococcus (S.) equi subsp. zooepidemicus by VITEK 2 system. Based on the histopathological features and the bacterial test, this case was diagnosed as meningitis associated with S. equi subsp. zooepidemicus infection in a foal. In our best knowledge, this is the first report for fibrino-purulent meningitis caused by S. equi subsp. zooepidemicus infection in Jeju.
Abstract
In November 2012, a 4-month-old foal with anorexia, neurologic signs with ataxia and death was sub-mitted for necropsy to the diagnostic laboratory of Jeju Self-Governing Provincial Veterinary Research Institute. Grossly, yellowish-white fibrinous materials were seen on the ventral cerebrum, cerebellum, medulla oblongata and cervical spinal cord of the foal. Histologically, severe fibrino-purulent meningitis characterized by the infiltration of neutrophils and fibrionous exudates with bacterial colonies were pre-sented in cerebrum, cerebellum, brain stem and cervical spinal cord. In the bacterial isolation using me-ningeal exudate, the small white colonies on blood agar plate with β-hemolysis were observed. Isolated bacteria were Gram-positive cocci and confirmed as Streptococcus (S.) equi subsp. zooepidemicus by VITEK 2 system. Based on the histopathological features and the bacterial test, this case was diagnosed as meningitis associated with S. equi subsp. zooepidemicus infection in a foal. In our best knowledge, this is the first report for fibrino-purulent meningitis caused by S. equi subsp. zooepidemicus infection in Jeju.
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