The unwelcome arrival of the cattle disease Mycoplasma bovis in the Waikato was just a matter of time. The more that is emerging about the untracked movement of animals makes it highly likely that other farms will be infected long before containment succeeds, if that is still possible.
The rapid known spread of the infection has been a costly wake-up call for the dairy industry, and a reminder how devastating animal disease can be for the primary sector.
Thirty-nine properties have been identified with the disease since it first was detected in cattle near Oamaru last July. Hundreds of farms are "of interest" because they unknowingly took animals from operations with the disease or are near infected properties.
The likelihood that the disease will be found in every region of the country confirms that cattle effectively have been, as one expert put it, unwitting "stealth bombs" as they were delivered to other properties.
The failure of measures to eradicate or stop the disease spreading raises questions whether the current approach is suitable.