Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014
Background and Objectives: In Iran, rainbow trout farms exist in almost all provinces. Viral hemorrhagic septicemia is one of the most important infectious diseases of the rainbow trout which is a serious threat to the farming industry. This study was conducted to investigate outbreaks in 2014 and i...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2017-12-01
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| Series: | مجله اپیدمیولوژی ایران |
| Subjects: | |
| Online Access: | http://irje.tums.ac.ir/article-1-5823-en.html |
| _version_ | 1818927244404326400 |
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| author | S Bokaei K Absalanfard MH Fallah Mehrabadi H Ebrahimzadeh Mosavi A Ghajari N Shahbazian |
| author_facet | S Bokaei K Absalanfard MH Fallah Mehrabadi H Ebrahimzadeh Mosavi A Ghajari N Shahbazian |
| author_sort | S Bokaei |
| collection | DOAJ |
| description | Background and Objectives: In Iran, rainbow trout farms exist in almost all provinces. Viral hemorrhagic septicemia is one of the most important infectious diseases of the rainbow trout which is a serious threat to the farming industry. This study was conducted to investigate outbreaks in 2014 and identify important determinants of the agent entry and disease occurrence in the farms.
Methods: Data were collected using a structured questionnaire and the disease was detected based on clinical signs and laboratory investigations by PCR methods.
Results: During 52 weeks of the study in 2014, 114 of 1140 (12.63%) farms were affected within 78 zones in 14 provinces. In multivariable analysis, illegal entrance of fries (odds ratio: 7.81, 95% CI: 3.63-16.8), illegal entrance of fish (odds ratio: 5.60, 95% CI: 3.03-10.35) and use of river as the water supply (odds ratio: 2.46, 95% CI: 1.51-4.02) were detected as risk factors associated with virus entry and disease outbreak in farms.
Conclusion: Observing biosecurity measures in the farm level, applying risk-based surveillance based on known risk factors, and assessing these factors on a regular basis are important in prevention and control of VHS. |
| first_indexed | 2024-12-20T03:09:56Z |
| format | Article |
| id | doaj.art-867735aa107b48dc8323dc220774f8c1 |
| institution | Directory Open Access Journal |
| issn | 1735-7489 2228-7507 |
| language | fas |
| last_indexed | 2024-12-20T03:09:56Z |
| publishDate | 2017-12-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | مجله اپیدمیولوژی ایران |
| spelling | doaj.art-867735aa107b48dc8323dc220774f8c12022-12-21T19:55:30ZfasTehran University of Medical Sciencesمجله اپیدمیولوژی ایران1735-74892228-75072017-12-01133253261Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014S Bokaei0K Absalanfard1MH Fallah Mehrabadi2H Ebrahimzadeh Mosavi3A Ghajari4N Shahbazian5 PhD in Epidemiology, Department of Food Hygiene & Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Professor, Department of Food Hygiene & Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Assistant Professor, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran Professor, Department of Aquatic Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran PhD Student, Department of Health and Management of Aquatic Diseases, Iranian Veterinary Organization, Tehran, Iran PhD, Department of Health and Management of Aquatic Diseases, Iranian Veterinary Organization, Tehran, Iran Background and Objectives: In Iran, rainbow trout farms exist in almost all provinces. Viral hemorrhagic septicemia is one of the most important infectious diseases of the rainbow trout which is a serious threat to the farming industry. This study was conducted to investigate outbreaks in 2014 and identify important determinants of the agent entry and disease occurrence in the farms. Methods: Data were collected using a structured questionnaire and the disease was detected based on clinical signs and laboratory investigations by PCR methods. Results: During 52 weeks of the study in 2014, 114 of 1140 (12.63%) farms were affected within 78 zones in 14 provinces. In multivariable analysis, illegal entrance of fries (odds ratio: 7.81, 95% CI: 3.63-16.8), illegal entrance of fish (odds ratio: 5.60, 95% CI: 3.03-10.35) and use of river as the water supply (odds ratio: 2.46, 95% CI: 1.51-4.02) were detected as risk factors associated with virus entry and disease outbreak in farms. Conclusion: Observing biosecurity measures in the farm level, applying risk-based surveillance based on known risk factors, and assessing these factors on a regular basis are important in prevention and control of VHS.http://irje.tums.ac.ir/article-1-5823-en.htmlviral hemorrhagic septicemia (vhs)risk factorsrainbow trout farms |
| spellingShingle | S Bokaei K Absalanfard MH Fallah Mehrabadi H Ebrahimzadeh Mosavi A Ghajari N Shahbazian Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 مجله اپیدمیولوژی ایران viral hemorrhagic septicemia (vhs) risk factors rainbow trout farms |
| title | Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 |
| title_full | Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 |
| title_fullStr | Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 |
| title_full_unstemmed | Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 |
| title_short | Investigation of Outbreaks of Viral Hemorrhagic Septicemia and Associated Risk Factors in Rainbow Trout Farms in Iran, 2014 |
| title_sort | investigation of outbreaks of viral hemorrhagic septicemia and associated risk factors in rainbow trout farms in iran 2014 |
| topic | viral hemorrhagic septicemia (vhs) risk factors rainbow trout farms |
| url | http://irje.tums.ac.ir/article-1-5823-en.html |
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