Mycoplasma bovis has not been confirmed in Northland, MPI says, despite some reports that it has.
Last week, two farms in the region were put under a Notice of Direction by MPI while testing for the cattle disease took place.
"This is a precautionary measure while under testing," an MPI spokesperson said yesterday.
Federated Farmers Northland dairy chairman Ashley Cullen said he was particularly worried about the cattle disease after seeing a map of the number of traces in Northland.
Forward traces were where a farm has had cattle moved from an potentially infected or suspicious farm.