A rogue rabbit virus, confirmed in Otago, could thwart regional council plans by making the animals immune to its infection operation.
Council chief executive Sarah Gardner says said the RHDV2 virus, previously confirmed in the Bay of Plenty and Marlborough, has been detected in Central Otago through testing by the regional council.
This has been a concern as it could create immunity among the animals to the RHDV1 "K5" virus it released in March in a widespread rabbit-cull operation.
In a statement, Gardner said the council reminded all landowners it was very important to continue rabbit controls in addition to the K5 virus.