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Ashburton Courier: May 21, 2020

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Page 26, <strong>Ashburton</strong>'s The <strong>Courier</strong>, Thursday <strong>May</strong> <strong>21</strong>, <strong>2020</strong><br />

Local news at www.starnews.co.nz<br />

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The Mycoplasma bovis eradication programme is<br />

making headway, says MPI’s chief science adviser<br />

Dr John Roche.<br />

Dr Roche, reporting to dairy industry body<br />

DairyNZ, said all indicators suggested the<br />

programme was doing very well in the fight against<br />

Mbovis.<br />

It was measured in several ways with one of the<br />

benchmarks the Estimated Dissemination Rate<br />

(EDR) which was sitting below one at 0.4; it was<br />

over two at the start of the outbreak.<br />

‘‘The EDR is the number of herds that become<br />

infected in athree­month period divided by the<br />

number of herds that were infected in the three<br />

months before that,’’ he said.<br />

‘‘From this number we get avery strong<br />

indication of whether we’re winning the war or not.<br />

If the EDR is greater than one, then the disease is<br />

growing. If it’s below one, we’re shrinking the<br />

disease.’’<br />

Dr Roche was aware of people’s concern when<br />

the number of confirmed cases increased but said<br />

what was important was the discovery of fewer<br />

infected herds, despite looking harder in areas such<br />

as Bulk Tank Milk surveillance and the national<br />

beef survey.<br />

He said the genetic analysis of Mbovis from<br />

confirmed cases still only identified one strain.<br />

‘‘That tells us we’ve only had one incursion. All<br />

infected properties are linked to the single source of<br />

the outbreak. The measures gives us confidence the<br />

disease is not widespread in New Zealand’s cattle<br />

population.’’<br />

Dr Roche felt for farmers affected by the trauma<br />

and stress dealing with the disease as more than<br />

153,500 cattle had been culled, but said seeing first<br />

hand what happens in an Mbovis outbreak overseas<br />

with incurable mastitis and seemingly healthy calves<br />

dying overnight was also not pleasant.<br />

‘‘I wouldn't want New Zealand farmers having to<br />

deal with that into the future.’’<br />

He said the 10­year phased programme, started<br />

in 2018, would continue its plan to eradicate Mbovis<br />

from New Zealand, reduce the effects on farmers,<br />

and to leave astronger biosecurity system.<br />

‘‘The current focus is on finding and eliminating<br />

the disease. The delimiting phase is expected to end<br />

in 20<strong>21</strong>. After that, background surveillance testing<br />

will continue for approximately seven years.’’<br />

He said international epidemiology experts<br />

Dr John Roche, MPI chief science adviser<br />

Ausvet recently analysed the surveillance<br />

programme and found that following delimiting, the<br />

surveillance elements had in place building blocks<br />

to give assurance that Mbovis was absent from our<br />

country.<br />

‘‘The programme’s current ELISA and PCR<br />

testing regime is really good for this stage of the<br />

eradication, but it will be further strengthened by<br />

new diagnostics research that we’ve<br />

commissioned.’’<br />

Multiple diagnostic research projects were also in<br />

the pipeline.<br />

Overall up to $30 million had been set aside for<br />

priority science to help accelerate eradication of<br />

Mbovis and prevent another incursion.<br />

‘‘We’re investing that money in areas identified as<br />

priorities by experts, including vets, scientists,<br />

industry and government.’’<br />

The research includes projects to better<br />

understand how the disease spreads under different<br />

New Zealand farming systems, and the social and<br />

economic impacts of the eradication on farmers and<br />

rural communities.<br />

‘‘Being first isn’t always easy. However, Iwant to<br />

assure you that we're confronting the challenge of<br />

being the first country in the world to eradicate<br />

Mycoplasma bovis with the best science and people<br />

–and, we are winning.’’<br />

Anderson in as programme director<br />

Stuart Anderson has taken over as director of the<br />

Mycoplasma bovis programme.<br />

Mr Anderson has been with Ministry forPrimary<br />

Industries (MPI), in different roles, for more than<br />

eight years.<br />

He has joined the programme from his role as MPI<br />

director of fisheries management and has taken over<br />

from Geoff Gwyn who has led the initial response and<br />

later eradication programme for the past three years.<br />

Mr Andersonhas spent his career working in, or in<br />

support of, the primary industries sector.<br />

He has worked at the Crown Research Institute<br />

Scion; MAF and its successor MPI.<br />

His experience has included managing the Adverse<br />

Events Recovery programme (covering droughts,<br />

storms, floods, and PSA recovery), forestry, economic<br />

analysis (including the Situation and Outlook for<br />

Primary Industries), and fisheries.<br />

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