“…The isolation of MAP from clinical samples, such as feces, tissue, milk, and blood, has been considered the gold standard for the diagnosis of paratuberculosis (Collins, 2011). Additionally, PCR assays have been developed to detect MAP in feces, and ELISA has been used to detect antibodies against MAP in the host animal (Arango-Sabogal et al, 2016;Gilardoni et al, 2016;de Kruijf et al, 2017;Mathevon et al, 2017). However, those methods have low sensitivity and specificity for the detection of MAP in subclinical infection (Sockett et al, 1992;Cousins et al, 1999;Englund et al, 2002;Bögli-Stuber et al, 2005;Nielsen and Toft, 2008;Collins, 2011).…”