In many cases, Pasteurella sp. has been identified in connection with serious bacterial outbreaks in lumpfish, with consequent high levels of mortality. Such outbreaks commonly occur in connection with operational processes that may cause stress to the fish, such as vaccination, transport or other forms of handling.
Little is known about how the bacterium enters a population, and how it is able to spread both within and between populations. This project aims to identify possible bacterial infection pathways as a means of determining the timing of any preventive or operational measures.