Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Information received on 14/12/2020 from Dr Ali Safar Maken Ali, Head, Iran Veterinary Organization (IVO), Ministry of Jihad-e- Agriculture, Tehran, Iran
Report type Follow-up report No. 2
Date of start of the event 19/11/2020
Date of confirmation of the event 20/11/2020
Report date 14/12/2020
Date submitted to OIE 14/12/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 04/02/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic), Necropsy
This event pertains to the whole country
Related reports Immediate notification (23/11/2020)
Follow-up report No. 1 (29/11/2020)
Follow-up report No. 2 (14/12/2020)
New outbreaks (1)
Outbreak 1 Ferydounkanar, Ezbaran, Mazandaran
Date of start of the outbreak 23/11/2020
Outbreak status Resolved (25/11/2020)
Epidemiological unit Natural park
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae) 3 3 0 0
Affected population Probably wild migratory birds coming from the north.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Whooper Swan:Cygnus cygnus(Anatidae) 3 3 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Whooper Swan:Cygnus cygnus(Anatidae) ** ** 100.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Contact with wild species
Epidemiological comments 1 - The event was reported based on Iran Veterinary Organization HPAI epidemio-surveillance program. 2 - The aim is to close the event; in the protection zone and surveillance zone trace back and trace forward activities are ongoing.
Control measures
Measures applied
  • Screening
  • Quarantine
  • Official disposal of carcasses, by-products and waste
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Zoning
Diagnostic test results
Laboratory name and type Species Test Test date Result
Provincial Veterinary Laboratory of Mazandaran (Local laboratory) Whooper Swan real-time PCR 23/11/2020 Positive
Central Veterinary Laboratory of Iran Veterinary Organization (National laboratory) Whooper Swan real-time PCR 25/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations