Mycoplasma bovis has now been confirmed in Northland for the first time.
In a statement yesterday, Biosecurity New Zealand said the infected property was a dry stock beef farm.
As with all the other infected properties, it was identified through the tracing of animal movements from known infected farms.
It was now under a restricted place notice, placing it in quarantine lock-down and limiting the movement of animals and risk goods on and off the farm.
Neighbours who shared a boundary with the infected property had been notified and the risk to neighbouring farms was "very low", the statement said.
As part of the phased eradication programme under way, all infected groups of cattle on the farm would be culled, in agreement with the farmer concerned around timing.
The Ministry for Primary Industries is planning a public meeting in the region.
