In a press release, senior researcher Martin Iversen said that mortality caused by disease costs the Norwegian fish farming industry approximately US 165 million dollar a year, and the industry spends around US 41 million dollar just for vaccines each year. A large number of disease outbreaks take place during the first months after output in the sea. And an important factor that is often underestimated is the stress that the salmon smolt is exposed to when being transferred to the sea.
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