INFECTIOUS SALMON ANEMIA - NORWAY: OIE
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A ProMED-mail post
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International Society for Infectious Diseases <http://www.isid.org>
Date: Mon 21 May 2012
Source: OIE, WAHID [edited]
<http://web.oie.int/wahis/public.php?page=single_report&pop=1&reportid=11970>
Infectious salmon anemia, Norway
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Information received on 21 May 2012 from Dr Keren Bar-Yaacov, Chief
Veterinary Officer, Legislation, Norwegian Food Safety Authority,
Brumunddal, Norway
Summary
Report type Immediate notification
Start date 21 May 2012
Date of 1st confirmation of the event 21 May 2012
Report date 21 May 2012
Reason for notification 1st occurrence of a listed disease
Manifestation of disease Clinical disease
Causal agent infectious salmon anemia
Nature of diagnosis Laboratory (advanced), necropsy
A defined zone within the country
New outbreaks
Outbreak 1 12884 Sandnesbukta, Romsdal, More Og Romsdal
Date of start of the outbreak 21 May 2012
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit: Farm
Water type: fresh salt water
Population type: farmed
Production system: semi-open
Affected animals
Species Atlantic salmon (_Salmo salar_)
Morbidity 1 (scale 0-5)
Mortality 1 (scale 0-5)
Susceptible 10 000
Cases 50
Deaths 50
Destroyed 0
Slaughtered 0
Summary of outbreaks
Total outbreaks: 1
Apparent morbidity 0.5 percent
Apparent mortality 0.5 percent
Apparent case fatality rate 100 percent
Proportion susceptible animals lost 100 percent
Epidemiology
Source of the outbreak(s) or origin of infection
Unknown or inconclusive
Control measures applied
Movement control inside the country
Disinfection of infected premises/establishment(s)
Emergency harvest
Official destruction of clinically diseased aquatic animals
No vaccination
No treatment of affected animals
Measures to be applied
Stamping out
Zoning
Tracing forward
Tracing back
Surveillance outside containment and/or buffer zone
Official destruction of aquatic animal products
Official disposal of carcasses, by-products and waste
Control of vectors
Surveillance within containment and/or buffer zone
Diagnostic test results
National Veterinary Laboratory
Test Anatomo-pathological examination
Test date 21 May 2012
Result Positive
Test histopathological examination
Test date 21 May 2012
Result Positive
Test PCR
Test date 21 May 2012
Result Positive
The event is continuing. Weekly follow-up reports will be submitted.
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Communicated by:
ProMED-mail from HealthMap Alerts
<promed@promedmail.org>
[Infectious salmon anemia (ISA) was 1st described in Norway in 1984,
and outbreaks occur periodically in Norway and Chile. It is mainly a
disease of Atlantic salmons (_Salmo salar_) caused by an ortomixovirus
and in general affects fish maintained in marine water or exposed to
the sea. The disease is systemic and lethal, characterized by severe
anemia and hemorrhages in several organs. It is a disease of great
economic impact for the salmon industry. A map of the affected area
can be accessed at <http://healthmap.org/r/2qt4>. - Mod.PMB]
[see also:
Infectious salmon anemia â€" Canada 20120428.1116605
2011
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Infectious salmon anemia - Canada (05): (BC), questioned
20111116.3377
Infectious salmon anemia - Canada (04): (BC), questioned
20111111.3341
Infectious salmon anemia - Canada (03): (BC) 20111110.3335
Infectious salmon anemia - Canada (02): (BC) 20111108.3321
Infectious salmon anemia - Chile (02) 20111029.3217
Infectious salmon anemia - Canada: (BC) Pacific, 1st rep
20111019.3120
Infectious salmon anemia - Chile 20110730.2287
2010
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Infectious salmon anemia - Chile 20100820.2909
Infectious salmon anemia - Chile (02): (MA) 20101109.4064]
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