Bovine spongiform encephalopathy,
Information received on 10/03/2017 from Dr Valentín Almansa, Director General, Sanidad de la Produccion Agraria, Ministerio de Agricultura, Alimentación y Medio Ambiente, Madrid, Spain
Report type Immediate notification (Final report)
Date of start of the event 22/02/2017
Date of confirmation of the event 01/03/2017
Report date 10/03/2017
Date submitted to OIE 10/03/2017
Date event resolved 10/03/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 03/03/2016
Manifestation of disease Sub-clinical infection
Causal agent Prion (Atypical BSE type L)
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
New outbreaks (1)
Outbreak 1 Horcajo Medianero, Salamanca, Castilla Y Leon
Date of start of the outbreak 22/02/2017
Outbreak status Resolved (10/03/2017)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 134 1 0 1 0
Affected population A positive case. Three cohort animals alive. Investigations on-going.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 134 1 0 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cattle 0.75% 0.00% 0.00% 0.75%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments On 23 February 2017, the Central Veterinary Laboratory at Algete (National Reference Laboratory for transmissible spongiform encephalopathies accredited under UNE-EN ISO/IEC 17025:2005 for all TSE diagnostic tests) received a bovine brainstem sample from the regional accredited animal health laboratory of Castilla y León (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 tests associated were Idex HerdChek BSE/Scrapie Antigen Test Kit and Western blot (Prionics). Following confirmation of BSE, the National Reference Laboratory went on with tests to discriminate the BSE strains by immunoblotting with results for atypical BSE type L on 1 March 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 female born on 12 January 2003.
Control measures
Measures applied
  • Movement control inside the country
  • Disinfection
  • Traceability
  • Official disposal of carcasses, by-products and waste
  • Selective killing and disposal
  • 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) 01/03/2017 Positive
Central Veterinary Laboratory, Algete (National laboratory) Cattle western blot 27/02/2017 Positive
Future Reporting
The event is resolved. No more reports will be submitted.
Map of outbreak locations