Exploring Options for Syndromic Surveillance in Aquaculture: Outbreak Detection of Salmon Pancreas Disease Using Production Data from Norwegian Farms

Table 3

Number of farms, fish cohorts, and production months used to design and test the performance of a syndromic salmon mortality surveillance system.

Area	Full study period, years 2014−2021 (alarm statistics; period, years 2018−2021)
	Farms	Cohorts	Months
3	137 (130)	576 (328)	6,597 (3,278)
4	122 (115)	427 (251)	4,842 (2,444)
5	40 (39)	138 (85)	1,760 (934)
6	131 (122)	477 (281)	5,920 (3,050)
All	430 (406)	1,618 (945)	19,119 (9,706)

The numbers are stratified by production areas in Norwegian coastal waters for different study periods.