Pilchard orthomyxovirus (POMV) is an emerging viral disease and little is known about effective strategies to control and prevent its outbreaks that was first isolated from wild pilchards in the late 90s’ off the South coast of Australian mainland, without apparent health impact on the host. More recently, POMV has been associated with large mortality outbreaks of farmed Atlantic salmons in Tasmania. Since 2012, POMV has been reported causing increased salmon mortality almost every year in all farming areas across the state. The full impact of POMV on the industry is unclear but POMV is now a direct threat to the economical sustainability of the Tasmanian salmon farming industry. This investment will review the occurrence of POMV outbreaks in the Tasmanian salmon industry and quantify the direct financial impact. The project will also Identify potential management, environmental and stock risk factors directly or indirectly related to the intensity of POMV outbreaks to support the development of interventions to reduce the frequency and severity of POMV outbreaks.