Information received on 12/01/2021 from Dr Ali Safar Maken Ali, Head, Iran Veterinary Organization (IVO), Ministry of Jihad-e- Agriculture, Tehran, Iran
Summary
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
Epidemiology
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.