IPN virus affecting fish also found in Kemijoki river basin

4.10.2012

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This year, IPN virus has been found in six different aquaculture establishments in Finnish inland waters. The latest infected establishment was found in the Kemijoki river basin. The IPN virus is harmless to humans and does not prevent using the fish for food. IPN virus is found in Finnish marine areas every year, but it has been rare in inland waters up to now.

Over 2012, all occurrences of IPN (infectious pancreatic necrosis) virus in Finnish inland areas have been the same virus stock, which has low pathogenic capacity. Although the fish carry the virus, they do not necessarily suffer symptoms, nor has there been any significant increase in mortality.

The IPN virus spreads easily to different fish species and aquatic organisms and withstands a variety of environmental conditions. The spread of fish diseases through roes can generally be prevented by disinfecting the roe, but IPN may spread regardless. Therefore, the IPN virus is extremely hard to eradicate from aquaculture establishments, compared to e.g. the fish BKD (bacterial kidney disease), which only affects salmonids and is more susceptible to many disinfectants.

Evira has released information on previous IPN occurrences in Finnish inland waters on 28.3.2012 (in Finnish), 25.7.2012, and 3.9.2012 (in English).

More about IPN (in Finnish)
Evira.fi > Eläimet > Eläinten terveys ja eläintaudit > Eläintaudit > Kalat ja ravut > IPN 

Additional information:
Senior Inspector Tiina Korkea-aho (fish disease control), t. +358 (0)40 351 3318
Senior Researcher Perttu Koski (fish disease research), t. +358 (0)40 569 4541
Senior Researcher Tuija Gadd (fish viral diagnostics), t. +358 (0)50 357 0328
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