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From: TSS ()
Date: December 4, 2005 at 7:12 am PST

In Reply to: ATYPICAL SCRAPIE FOUND IN THE FALKLANDS posted by TSS on November 17, 2005 at 11:48 am:


(Disease never reported before in the Falkland Islands/Malvinas).

Immediate notification report

Information received on 29 November 2005 from Dr Debby Reynolds, Director
General for Animal Health and Welfare, Department for Environment, Food and
Rural Affairs (DEFRA), London:

Report date: 4 November 2005.

Reason for immediate notification: first occurrence of a listed disease or
infection in a country or zone/compartment.

Date of first confirmation of the event: 1 November 2005.

Date of start of the event: 12 October 2005.

Clinical disease: yes.

Nature of diagnosis: clinical and laboratory.

Details of outbreak:

Name of the location Type of epidemiological unit Date of start of the
outbreak Species Number of animals in the outbreak
susceptible cases deaths destroyed slaughtered
Cape Dolphin (East Falkland) farm 12 Oct. 2005 ovi 3,368* 1 0 1 0
bov … 0 0 0 0

* as of 31 May 2005

Description of affected population: a 7-year-old ewe kept with other adult
ewes in a ewe ‘corp’ ready for lambing which starts in October 2005. All
lambing occurs outside in lambing paddocks. The affected animal was
homebred. The farm is a family farm of 4,705 hectares.

The sheep was discovered by the owner of the premises and a staff member of
the Department of Agriculture while driving through the property. Whereas
all the other sheep ran away from the vehicle, this animal stood still and
appeared to be unaware of the vehicle’s presence. It was in very poor body
condition and was constantly nibbling at its feet. It was imminently due to
lamb but at post-mortem the lamb was poorly developed. Lungs were
collapsed - looked like pneumonia.

Diagnosis: atypical case.

Laboratory where diagnostic tests were performed Species examined Diagnostic
tests used Date Results
Veterinary Laboratories Agency (VLA), Weybridge, United Kingdom (OIE
Reference Laboratory for scrapie) ovi histopathology 1 Nov. 2005 negative
immunostaining for PrP using VLA monoclonal antibody R145 at 1:500 1 Nov.
2005 positive

Source of outbreak or origin of infection: unknown or inconclusive.

Final report: yes.

* *


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