Bluetongue,
Tunisia
Information received on 28/12/2016 from Dr Malek Zrelli, Directeur Général, Direction Générale des Services Vétérinaires, Ministère de l'Agriculture, Tunis, Tunisia
Summary
Report type Immediate notification
Date of start of the event 01/11/2016
Date of confirmation of the event 13/12/2016
Report date 28/12/2016
Date submitted to OIE 28/12/2016
Date event resolved 31/01/2017
Reason for notification New strain of a listed disease in the country
Causal agent Bluetongue virus
Serotype 3
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (28/12/2016)
Follow-up report No. 1 (11/01/2017)
Follow-up report No. 2 (03/02/2017)
New outbreaks (1)
Outbreak 1 Beni khalled, Hannous, Beni khalled, Nabeul
Date of start of the outbreak 01/11/2016
Outbreak status Resolved (31/01/2017)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 8 0 0 0 0
Goats 7 0 0 0 0
Sheep 46 1 0 0 0
Affected population This is a Barbarine ewe over three years old. It showed dejection, fever, loss of weight, salivation, facial and submandibular oedema, nasal discharge, tachycardia and dyspnoea.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cattle 8 0 0 0 0
Goats 7 0 0 0 0
Sheep 46 1 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cattle 0.00% 0.00% - 0.00%
Goats 0.00% 0.00% - 0.00%
Sheep 2.17% 0.00% 0.00% 0.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
  • Preliminary phylogenetic analysis shows that the isolated strain probably comes from Africa.
Epidemiological comments - There are wet areas around the farm. - Climatic conditions before incubation were favourable for the vector’s activity (Culicoides). But now the climate is not in favour of its spread. - The two farms neighbouring the outbreak were sprayed with an insecticide.
Control measures
Measures applied
  • Disinfection / Disinfestation
  • Dipping / Spraying for control of vectors or parasites
  • Vaccination permitted (if a vaccine exists)
  • Treatment of affected animals (Symptomatic treatment with spraying)
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Tunisia Veterinary Research Institute (National laboratory) Sheep real-time PCR 13/12/2016 Positive
Experimental Zooprophylactic Institute of Abruzzo and Molise "G. Caporale" (OIE Reference Laboratory) Sheep nucleotide sequencing 21/12/2016 Positive
Experimental Zooprophylactic Institute of Abruzzo and Molise "G. Caporale" (OIE Reference Laboratory) Sheep polymerase chain reaction (PCR) 21/12/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations