Spain - 1 new outbreak of bovine spongiform encephalopathy in cattle on farm, Cantabria (OIE, May 12, 2017)

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Bovine spongiform encephalopathy, Spain

Information received on 12/05/2017 from Dr Valent?n Almansa, Director General, Sanidad de la Produccion Agraria, Ministerio de Agricultura, Alimentaci?n y Medio Ambiente, Madrid, Spain

Summary Report type Immediate notification (Final report) Date of start of the event 27/04/2017 Date of confirmation of the event 05/05/2017 Report date 12/05/2017 Date submitted to OIE 12/05/2017 Date event resolved 10/05/2017 Reason for notification Recurrence of a listed disease Date of previous occurrence 10/03/2017 Manifestation of disease Sub-clinical infection Causal agent Prion (Atypical BSE type L) Nature of diagnosis Laboratory (advanced) This event pertains to a defined zone within the country

New outbreaks (1)

Outbreak 1 Camargo, CANTABRIA, CANTABRIA Date of start of the outbreak 27/04/2017 Outbreak status Resolved (10/05/2017) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Cattle 51 1 0 1 0 Affected population A case positive to type L BSE. Cohort localized. Investigation ongoing.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Cattle 51 1 0 1 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Cattle 1.96% 0.00% 0.00% 1.96% *Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments On April 28th, 2017, the Central Veterinary Laboratory at Algete (National Reference Laboratory for transmissible spongiform encephalopathies accredited under UNE-EN ISO/IEC 17025:2005) received a brainstem sample suspected to be BSE-positive from the regional accredited animal health laboratory of Cantabria (official regional laboratory) after a positive result was obtained through the Bio-Rad TeSeE SAP rapid test. The National Reference Laboratory undertook the confirmatory tests authorized according to Regulation (EU) No. 1148/2014. The selected assays associated were Western blot (Prionics) and ELISA (TeSeE SAP Bio-Rad). Following positive results to both assays, the National Reference Laboratory performed assays to discriminate the BSE strains by immunoblotting with results for atypical BSE type L on May 5th, 2017. The sample was taken within the national TSE surveillance program (sampling of dead or non-slaughtered animals for human consumption over 48 months old). The animal was a crossbred (conjunto mestizo) female born on 25 February 2002.

Control measures Measures applied Movement control inside the country Traceability Official disposal of carcasses, by-products and waste Selective killing and disposal Disinfection Vaccination prohibited No treatment of affected animals Measures to be applied Official destruction of animal products

Diagnostic test results Laboratory name and type Species Test Test date Result Central Veterinary Laboratory, Algete (National laboratory) Cattle electroimmunotransfer blot assay (EITB) 05/05/2017 Positive Central Veterinary Laboratory, Algete (National laboratory) Cattle western blot 05/05/2017 Positive

Future Reporting The event is resolved. No more reports will be submitted.

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http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=23747