Alday-Sanz V, Rodger HD, Turnbull T, Adams A & Richards R (1994) An immunohistochemical diagnostic test for rickettsial disease. Journal of Fish Diseases, 17 (2), pp. 189-191. https://doi.org/10.1111/j.1365-2761.1994.tb00213.x
First paragraph: Piscirickettsia salmonis is a major pathogen of farmed salmonids in Chile and infection with this organism can result in significant mortalities (Fryer, Lannan, Giovannoni & Wood 1992). Farmed salmonids exhibiting clinical pathology, histopathology and rickettsia-like organisms (RLOs) resembling that seen in Chile have also been observed in Canada (Brocklebank, Speare, Armstrong & Evelyn 1992) and Ireland (Rodger & Drinan 1993).
Journal of Fish Diseases: Volume 17, Issue 2