Highly pathogenic avian influenza,
Information received on 12/01/2021 from Dr Ali Safar Maken Ali, Head, Iran Veterinary Organization (IVO), Ministry of Jihad-e- Agriculture, Tehran, Iran
Report type Follow-up report No. 1
Date of start of the event 05/12/2020
Date of confirmation of the event 06/12/2020
Report date 12/01/2021
Date submitted to OIE 12/01/2021
Reason for notification Recurrence of a listed disease
Date of previous occurrence 28/01/2020
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (15/12/2020)
Follow-up report No. 1 (12/01/2021)
New outbreaks (1)
Outbreak 1 Pourshamsian farm, South Khorasan
Date of start of the outbreak 28/12/2020
Outbreak status Resolved (03/01/2021)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 255000 255000 1008 253992 0
Affected population Laying hens
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 255000 255000 1008 253992 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 100.00% 0.40% 0.40% 100.00%
*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 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
  • Stamping out
  • 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 Khorasan Razavi (Private Laboratory) Birds real-time PCR 31/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations