Eradicating bovine TB in NZ

As part of our TBfree programme we deliver our pest control operations through a framework of TB management areas (TMAs). TMAs are areas with known TB infection in livestock or wildlife. Each TMA has a specific TB control plan designed to eradicate TB as effectively as possible.

Map showing boundaries of Hari Hari TB management areaThe Hari Hari TMA

The Hari Hari TMA covers 42,700 hectares north and east of the Poerua River and south of the Waitaha River. The area includes flat, predominantly dairy country and the Hari Hari township.

The habitat type is farmland interspersed with moderate hills covered with mature podocarp forest and areas of scrub. Altitudes range from sea level to 350 metres.

History of TB and pest control in Hari Hari

The Hari Hari TMA has a long history of TB infection in local wildlife and cattle herds. Cattle herd infections have been linked to local wildlife TB infections in deer and possums.

We completed aerial possum control in the:

  • Karnbach and Poerua blocks in 2018, and
  • Ianthe and One One blocks in 2021.

We undertook ground-based possum control in Hari Hari in 2019 and 2021/2022.

Current state

There are 7 infected herds in the Hari Hari TMA. We are carefully managing the infection under a special OSPRI programme.

If you're moving animals

A Movement Control Area was put in place for Hari Hari on 9 February 2021 to prevent the spread of TB into other areas. Before you move cattle or deer to another herd or farm, you must have them tested for bovine TB.

Future pest control operations

We plan our pest control operations up to 3 years in advance. The current year runs from July 2022 to June 2023.

Dates and control methods for pest control operations in Hari Hari are provisional and subject to change. If you’re affected by any upcoming operations, our pest control contractors will contact you before work begins. They will:

  • talk you through the specifics of each operation
  • explain what you need to do before the operations start
  • get your consent for the work to be done.
Type of controlWhenCoverageWhere
Ground control2022/202316,200haHari Hari, Ianthe
Ground control2023/202416,400haHari Hari
Aerial control2023/202412,400haKarnbach, Poerua
Ground control2024/202516,000haHari Hari

Map of 2022/2023 pest control operations

The proposed area for ground control is marked on the map in green.

Interactive map showing Hari Hari TB management area boundaries, Vector Control Zone, and proposed control areas


Vector Control Services will manage eradication activities in the Hari Hari TMA until 30 June 2023. Vector Free Marlborough Limited will manage eradication activities from 1 July 2023. Contact these organisations directly if you have feedback or questions about upcoming operations.

Vector Control Services

Phone: 0508 141 268

Vector Free Marlborough Limited

Phone: 0508 548 008

Nearest local OSPRI office

OSPRI Christchurch Office
PO Box 8674
Christchurch 8440
Phone: 03 363 3090