Controlling ubiquitous diseases in the hatchery:Clean water... few problems: Dirty water... nothing but problems

摘要

What does it take to cause a disease outbreak?If a disease agent such as the bacterium Aeromonas salmonicida and a susceptible host, such as the brook trout (Sa/ve/inusfontinalis), or the brown trout {Salmo trutta) are in proximity to one another in the same rearing unit, or the same stream, is disease inevitable? Are there other factors involved that can influence whether or not a disease outbreak occurs when a disease agent and a potentially susceptible host are in the same water?