Toward the identification of the main mechanisms determining the resistance or susceptibility of a host to a pathogenic microbe. CMS, cardiomyopathy syndrome; AGD, amoebic gill disease; BCWD, bacterial cold water disease; VHS, viral hemorrhagic septicemia; IPN, infectious pancreatic necrosis; INH, infectious hematopoietic necrosis; ISA, infectious salmon anemia; SRS, salmonid rickettsial septicemia; CyHV-3, cyprinid herpesvirus; QTL, quantitative trait loci; GWAS, genome-wide association study. References: 1Boison et al., 2019a; 2Hillestad and Moghadam, 2019; 3Boison et al., 2019b; 4Fraslin et al., 2018; 5Rodríguez-Ramilo et al., 2014; 6Houston et al., 2008; 7Houston et al., 2010; 8Houston et al., 2012; 9Gheyas et al., 2010; 10Moen et al., 2009; 11Moen et al., 2015; 12Verrier et al., 2013a; 13Saura et al., 2019; 14Langevin et al., 2012; 15Marancik et al., 2015; 16Paneru et al., 2016; 17Zwollo et al., 2017; 18Moore et al., 2018; 19Dettleff et al., 2015; 20Reyes-López et al., 2015; 21Robledo et al., 2016; 22Sutherland et al., 2014; 23Braden et al., 2015; 24Holm et al., 2015; 25Verrier et al., 2018; 26Dehler et al., 2019; 27Gratacap et al., 2019; 28Palaiokostas et al., 2018b; 29Robledo et al., 2019; 30Verrier et al., 2012; 31Verrier et al., 2013b; 32Biacchesi et al., 200732.