title: An outbreak of fatal hemorrhagic pneumonia caused by Streptococcus equi subsp. zooepidemicus in shelter dogs.
abstract: An outbreak of fatal hemorrhagic pneumonia with 70-90% morbidity and 50% mortality occurred in an animal shelter in Yangju, Gyeonggi Province, Korea. Clinically, the affected dogs showed severe respiratory distress within 48 h after arriving in the shelter. The dead were found mainly with nasal bleeding and hematemesis. At necropsy, hemothorax and hemorrhagic pneumonia along with severe pulmonary consolidation was observed, though histopathological analysis showed mainly hemorrhagic bronchopneumonia. Lymphoid depletion was inconsistently seen in the spleen, tonsil and bronchial lymph node. Gram-positive colonies were shown in blood vessels or parenchyma of cerebrum, lung, liver, spleen, and kidney. Also, Streptococcus (S.) equi subsp. zooepidemicus was isolated from the various organs in which the bacterium was microscopically and histologically detected. In addition, approximately 0.9 Kb specific amplicon, antiphagocytic factor H binding protein, was amplified in the bacterial isolates. In this study, we reported an outbreak of canine hemorrhagic bronchopneumonia caused by S. equi subsp. zooepidemicus in an animal shelter in Yangju, Korea.
authors.affiliation: Animal Disease Diagnostic Center, National Veterinary Research and Quarantine Service, Anyang 430-824, Korea. jwbyun@nvrqs.go.kr
authors.forename: Jae Won
authors.initials: JW
authors.lastname: Byun
authors.forename: Soon Seek
authors.initials: SS
authors.lastname: Yoon
authors.forename: Gye-Hyeong
authors.initials: GH
authors.lastname: Woo
authors.forename: Byeong Yeal
authors.initials: BY
authors.lastname: Jung
authors.forename: Yi-Seok
authors.initials: YS
authors.lastname: Joo
mesh_terms: D000818:Animals; D004196:Disease Outbreaks / Q000662:veterinary*; D004283:Dog Diseases / Q000453:epidemiology* / Q000382:microbiology* / Q000473:pathology; D004285:Dogs; D007723:Korea / Q000453:epidemiology; D018410:Pneumonia, Bacterial / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D018502:Streptococcus equi / Q000302:isolation & purification / Q000502:physiology*
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