Mycoplasma bovis has been confirmed on two properties in Hawke's Bay and Canterbury.
The Ministry for Primary Industries said they were a Hawke's Bay beef farm in Poukawa with 36 animals and a beef farm near Ashburton with 204 animals. The farms were linked to other known infected properties through animal movements and tracing work from them was under way.
The number of active infected properties in New Zealand stands at 42.
There are 70 properties with Restricted Place Notices, meaning they are infected or suspected of having Mycoplasma bovis.
The Hawke's Bay A and P Society is still considering its position with its Royal New Zealand Show cattle section which has been placed under threat because of the M.bovis.
General manager Sally Jackson said tonight the two meetings this week — the cattle committee and the board along with an MPI representative — had had "positive" outcomes and it is hoped a decision would be confirmed next week.