Most of Chilean cases of non-pathogenic ISA virus are concentrated in Aysén

Christian Pérez Meanwhile, the region of Los Lagos registered 22 confirmed cases of ISA virus HPR-0 in 2013, which represented a 30.14 percent of the Chilean total, while only 3 cases were recorded in the region of Magallanes or 4.11 percent. According to the most recent Sanitary Report published by Sernapesca, the prevalence of the HPR-0 strain of ISA virus was gradually increased in 2013 reaching a 36-percent peak in June. Confirmed strains The first two cases of ISA virus in 2013 were detected in April and corresponded to the strains HPR 3 and HPR 14. Then, a third positive diagnosis of ISA virus detected in May was confirmed as HPR 14 "which did not meet the requirements to be considered as an outbreak, given that it was detected in a laboratory analysis but without any clinical signs or mortality associated with the disease," Sernapesca said. Finally, in early December, a third case of ISA virus was confirmed and identified as HPR 7a. All positive sites were harvested and a sanitary fallow was implemented in each farm afterwards, as established in the Surveillance and Control Programme against the Infectious Salmon Anemia virus.