Monitoring infection with Piscine myocarditis virus and development of cardiomyopathy syndrome in farmed Atlantic salmon (Salmo salar L.) in Norway
| Autor: | Julie Christine Svendsen, Stian Nylund, Julia Fossberg Buhaug, Britt Bang Jensen, Harald Takle, Anja B. Kristoffersen |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Atlantic salmon Piscine myocarditis virus Veterinary (miscellaneous) Salmo salar Cardiomyopathy Zoology Aquaculture Aquatic Science Biology Virus 03 medical and health sciences Fish Diseases Risk Factors health services administration Epidemiology medicine cohort study Animals Salmo health care economics and organizations Totiviridae cardiomyopathy syndrome field investigation Norway Myocardium Outbreak 04 agricultural and veterinary sciences Original Articles Viral Load medicine.disease biology.organism_classification piscine myocarditis 030104 developmental biology Median time Epidemiological Monitoring 040102 fisheries 0401 agriculture forestry and fisheries RNA Viral Original Article epidemiology Cardiomyopathies Viral load |
| Zdroj: | Journal of Fish Diseases |
| ISSN: | 1365-2761 |
| Popis: | An epidemiological study was carried out in Norway in 2015–2018, investigating the development of infection with Piscine myocarditis virus (PMCV) and development of cardiomyopathy syndrome (CMS) in farmed Atlantic salmon. Cohorts from 12 sites were followed and sampled every month or every other month from sea transfer to slaughter. PMCV was detected at all sites and in all sampled cages, and fish in six sites developed clinical CMS. The initial infection happened between 1 and 7 months post‐sea transfer, and the median time from infection with PMCV until outbreak of CMS was 6.5 months. Generally, fish from sites with CMS had higher viral titre and a higher prevalence of PMCV, compared to sites that did not develop clinical CMS. The virus persisted until the point of slaughter at most (11 out of 12) of the sites. The detection of PMCV in all sites suggests that PMCV is more widespread than previously known. Screening for PMCV as a tool to monitor impending outbreaks of CMS must be supported by observations of the health status of the fish and risk factors for development of disease. |
| Databáze: | OpenAIRE |
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