MPI’s M. bovis programme director Simon Andrew says recently completed genomic testing from a single property, which was previously confirmed with M.bovis, had identified the strain.

He says the new strain doesn't behave any differently than the strain MPI have been dealing with, and their existing testing will pick it up, as it has done in this case.

Simon Andrew says as a result of finding the new strain MPI’s testing programme will be stepped up and a thorough investigation will be carried out to see how arrived on the farm.

"While considered a very low risk, frozen semen used on the affected property, which had been imported prior to the introduction of the new import health standard, is being looked at.There is no evidence to suggest that there has been any forward spread on any farms that received cattle from this farm,” he says.

Simon Andrew says if their investigation into pathways reveals that further action is required, including targeted testing and surveillance on-farm, MPI will let farmers know. But he says at this stage the increased frequency of summer bulk tank milk testing, beef surveillance and tracing animals will serve us well.

Farmers with any concerns can call 0800 00 83 33 or email This email address is being protected from spambots. You need JavaScript enabled to view it.