Highly pathogenic avian influenza,
Tunisia
Information received on 01/12/2016 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 24/11/2016
Date of confirmation of the event 30/11/2016
Report date 01/12/2016
Date submitted to OIE 01/12/2016
Date event resolved 05/04/2017
Reason for notification First occurrence of a listed disease in the country
Causal agent Highly pathogenic avian influenza virus in wild birds
Serotype H5
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (01/12/2016)
Follow-up report No. 1 (14/12/2016)
Follow-up report No. 2 (28/12/2016)
Follow-up report No. 3 (11/01/2017)
Follow-up report No. 4 (03/02/2017)
Follow-up report No. 5 (20/02/2017)
Follow-up report No. 6 (12/04/2017)
New outbreaks (1)
Outbreak 1 Ichkeul Natural Park, Ghazala, Bizerte
Date of start of the outbreak 24/11/2016
Outbreak status Resolved (05/04/2017)
Epidemiological unit Natural park
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Coot:Fulica atra(Rallidae) 17 17 0 0
Eurasian Wigeon:Anas penelope(Anatidae) 13 13 0 0
Affected population On November 24, 2016, 30 Eurasian wigeons (Anas Penelope) and common coots (Fulica atra) were found dead in Ichkeul Natural Park (wetland), in the framework of the strengthened surveillance in wetland areas (REPIOM network). On November 30, 2016, the laboratory of the Veterinary Research Institute in Tunis confirmed the presence of H5 virus in the samples taken on the animals.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Coot:Fulica atra(Rallidae) 17 17 0 0
Eurasian Wigeon:Anas penelope(Anatidae) 13 13 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Common Coot:Fulica atra(Rallidae) ** ** 100.00% **
Eurasian Wigeon:Anas penelope(Anatidae) ** ** 100.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments - Tunisia is located in the main migratory corridor for wild birds going to Africa from Europe during winter migration. Migration is ongoing and this viral strain must have been carried over by migrating birds. - According to the OIE Terrestrial Animal Health Code, article 10.4.1, provision 8, this outbreak does not modify the sanitary status of the country as affected birds are wild and thus are not included in the OIE definition of poultry. - A 3-km protection zone and a 10-km surveillance zone were implemented. There is no industrial poultry farm within the protection zone, and eight broiler farms within the surveillance zone. - Surveillance measures strengthened within the surveillance zone and the whole country. - Access to Ichkeul Natural Park was suspended.
Control measures
Measures applied
  • Surveillance outside containment and/or protection zone
  • Official disposal of carcasses, by-products and waste
  • Surveillance within containment and/or protection zone
  • Control of wildlife reservoirs
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Veterinary Research Institute in Tunis (National laboratory) Common Coot real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 30/11/2016 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations