This is the OIE ISA Testing Manual: http://www.oie.int/fileadmin/Home/eng/Health_standards/aahm/2010/2.3.05_ISA%20.pdf.
This manual walks you through all the tests that are used to indicate and then prove the presence of ISA virus. For those without a biological sciences background, the jargon will be tough sledding. The most important table is: Table 5.1 - Methods for targeted surveillance and diagnosis of ISA. Go here first.
The definition of a suspect case, for practical purposes of reporting the disease is Section 7.1.: Definition of suspect case. The definition of a confirmed case, is provided in Section 7.2.: Definition of confirmed case. Go here second.
There are several key, referenced scientific papers that support the OIE ISA Testing Manual: 1, 14 and 26 for starters.
Read the OIE Manual in conjunction with this previous post on ISA testing: http://fishfarmnews.blogspot.com/2011/12/isa-testing-for-salmon.html.
This manual is key reading to understand Cohen Commission testimony, Dec 15, 16 and 19, 2011.
Dec 15 transcripts are here: http://www.cohencommission.ca/en/Schedule/Transcripts/CohenCommission-HearingTranscript-2011-12-15.pdf#zoom=100.
Dec 16 transcripts are here: http://www.cohencommission.ca/en/Schedule/Transcripts/CohenCommission-HearingTranscript-2011-12-16.pdf#zoom=100.
Dec 19 transcripts are here: http://cohencommission.ca/en/Schedule/Transcripts/CohenCommission-HearingTranscript-2011-12-19.pdf#zoom=100.
Dec 15, 16, 19 Exhibits are here: http://www.cohencommission.ca/en/Schedule/.