Natural versus vaccinated immunity

Gary Stephenson made this Official Information request to Ministry for Primary Industries

Ministry for Primary Industries did not have the information requested.

From: Gary Stephenson

Dear Ministry for Primary Industries,

Otago Regional Council director environmental monitoring and operations Scott MacLean said the New Zealand Rabbit Co-ordination Group (RCG), of which the ORC was a member, had submitted an application for the Korean strain of the calicivirus known as RHDV-1 K5 to be approved. ''We're hoping to get the go-ahead for an autumn bait drop, but if not there would be another window of opportunity in early spring when the rabbits were more likely to eat the infected carrots as there wasn't much fresh grass around and the temperature was optimal for the virus to work,'' Mr MacLean said. He said the new strain would reduce rabbit numbers but warned it ''won't be the silver bullet we're all looking for''. ''It certainly won't wipe them out, but it should boost the effects of the existing calicivirus. ''We're sitting around 73% immunity to the current virus so we're hoping the new strain would boost the 27% who aren't susceptible to up to 40%.''

My question is this:
If RHDV1a-K5 will overcome “natural” immunity, surely it will, therefore overcome “vaccinated” immunity?

Yours faithfully,

Gary Stephenson

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From: Ministerials
Ministry for Primary Industries

Dear Gary,

Thank you for your official information request as below.

Your request will be considered and an answer provided in accordance with the requirements of the Official Information Act 1982.

If you have any questions regarding this request, please email [email address].

Ngā mihi,

Francesca Ancillotti | Ministerial Support Officer
Ministerials & Business Support | Office of the Director-General
Ministry for Primary Industries - Manatū Ahu Matua
Telephone: (04) 830 1726 | Web: Ministerials Kotahi Page or

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From: Alastair Gilby
Ministry for Primary Industries

Attachment OIA17 0092 93 100 101 PM Response.pdf
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Dear Gary Stephenson,


On behalf of Geoff Gwyn Director Readiness and Response Services please
find a response to your official information requests attached.





Alastair Gilby | Adviser – Official Information Act
Office of the Director-General | Ministerials and Business Support
Ministry for Primary Industries - Manatû Ahu Matua | Pastoral House 25
The Terrace | PO Box 2526 | Wellington 6140
New Zealand
Web: [1]


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