In the present study, we describe a natural outbreak of carp edema virus disease (CEVD) in koi carp, concentrating on clinical manifestation, gross and microscopic pathology, immunological parameters, viral diagnostics, and phylogenetic analysis. Examination of white blood cell parameters showed increased monocyte and decreased lymphocyte counts in CEV-affected fish compared to healthy control fish. Regarding immune system functioning, the present work shows, for the first time, enhanced phagocytic activity in CEV-affected fish. Respiratory burst of phagocytes was strongly increased in diseased fish, the increase being attributed to an increased phagocyte count rather than enhancement of their metabolic activity. The present work also newly shows histopathological changes in the pancreatic tissue of diseased koi.
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http://dx.doi.org/10.3390/v15051044 | DOI Listing |
Open Vet J
November 2024
Department of Pathology and Poultry Disease, College of Veterinary Medicine, University of Diyala, Baqubah, Iraq.
J Environ Sci (China)
June 2025
Neurosurgery Department, Institute of Neuroscience, The First People's Hospital of Lianyungang, The First Affiliated Hospital of Kangda College of Nanjing Medical University, Lianyungang 222000, China. Electronic address:
J Gen Virol
November 2024
Laboratoire de Ploufragan-Plouzané-Niort, ANSES, 29280 Plouzané, France.
Carp edema virus disease (CEVD) is a severe viral illness that causes substantial economic losses in wild and farmed common carp and koi. It is caused by carp edema virus (CEV), a member of the family whose genetic diversity and genome evolution are poorly understood. Based on a genomic fragment of the gene, two genogroups, genogroup I (gI) and genogroup II (gII), have been identified in samples of different origins.
View Article and Find Full Text PDFArch Virol
November 2024
Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.
Front Vet Sci
September 2024
College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China.
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