Atypical scrapie in single NZ sheep

Contrary to what the New Zealand Herald reported tonight (this morning in NZ), the animal in question was born in NZ, not the UK, because NZ does not import sheep from the UK.

MAF Biosecurity New Zealand (MAFBNZ) and the New Zealand Food Safety Authority (NZFSA)
today confirmed that a series of New Zealand and European laboratory tests on a single New Zealand sheep brain have detected the condition atypical scrapie (also known as Nor 98).

Atypical scrapie/Nor 98 is a relatively recently discovered brain condition of sheep and goats that is quite different from the classical form of scrapie. 

Neither atypical scrapie/Nor 98 nor scrapie is known to pose any risk to human health or the safety of eating meat or animal products.

MAFBNZ Principal International Adviser Dr Stuart MacDiarmid says global knowledge about atypical scrapie/Nor 98 is evolving.  The widely accepted mainstream scientific view is that it occurs spontaneously or naturally in very small numbers of older sheep in all sheep populations around the world.

“This positive detection of atypical scrapie/Nor 98 in a sheep from New Zealand’s national flock reinforces that view.  Every country that has conducted sufficient surveillance for atypical scrapie/Nor 98 has found it in their flocks.  This includes most Scandinavian and EU countries, the UK, the USA and Canada,” he says.

The detection does not change New Zealand’s status as free from scrapie.

Dr MacDiarmid says because of this scrapie freedom status, New Zealand supplies sheep brains to the European Union for use in the development of tests for scrapie. 

“The affected brain was one of a consignment of 200 brains sent for this purpose.  EU-authorised tests carried out in New Zealand prior to shipment had not picked up anything unusual.  However further tests in Europe and re-testing in New Zealand on different parts of the brain from the area originally tested have now established a diagnosis of atypical scrapie/Nor 98.

There is no evidence that atypical scrapie/Nor 98 can be transmitted naturally to other animals or to people, or that it in any way affects people.

 

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About Douglas Powell

A former professor of food safety and the publisher of barfblog.com, Powell is passionate about food, has five daughters, and is an OK goaltender in pickup hockey. Download Doug’s CV here. Dr. Douglas Powell editor, barfblog.com retired professor, food safety 3/289 Annerley Rd Annerley, Queensland 4103 dpowell29@gmail.com 61478222221 I am based in Brisbane, Australia, 15 hours ahead of Eastern Standard Time