According to the latest update on a report by the National Fisheries Service (Sernapesca) on the situation of the infectious salmon anemia (ISA) virus in farms, there is one confirmed ISA outbreak at the Acuimag company in the region of Magallanes. Meanwhile, the number of sites suspected to contain the ISA virus rose from 10 to 11 between 15 and 31 December 2010. And two more are in the resting state of health, reports Fis.com.
The report, dated December 31, 2010, states that they consider it suspicious that the center has cages with salmon that tested positive to the ISA virus, but do not manifest the disease clinically. Of the 11 suspected sites, only two are in the stage of harvesting. The remaining nine are currently populated. Sernapesca's document states that they have placed farms that have cages with positive laboratory results for the virus and mortalities associated with this disease in the category of an outbreak.
According to this classification, BahÃa Perales is the only center with proven cases of clinical manifestations of the ISA virus, including mortality. This center is now in the process of harvesting and removing the infection. For its part, the Bhutan 1 centre, owned by the company Acuinova, and Mentirosa 3, owned by Cupquelan, are currently on a health break. This is because in principle, they are classified as "suspicious" but now find themselves without fish due to a thorough disinfection of their premises.
This blog is written by Martin Little The Aquaculturists, published and supported by the International Aquafeed Magazine from Perendale Publishers.
How horrible that there are 9 cages left to continue the spread of the disease. Although they don't show clinical signs (yet) they have been tested positive for carrying this disease. Studies have already been done that prove that ISA can be passed by carriers. I imagine they are hoping to get them as big as possible before they have to harvest due to the manifestation of clinical signs of this very infectious disease.
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