Summary
Report type: immediate notification
Started: 25 Nov 2021
Confirmed: 28 Nov 2021
Reported: 29 Nov 2021
Reason for notification: recurrence
Last occurrence: 25 Nov 2021
Causal agent: Highly pathogenic avian influenza virus
Serotype: H5N8
Nature of diagnosis: clinical, necropsy, laboratory
This event pertains to a defined zone within the country.

New outbreaks
Total outbreaks (2)
Outbreak location 1: Mighan lagoon, Arak, Markazi
Started: 25 Nov 2021
Epidemiological unit: natural park
Animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Greylag goose (_Anser anser_) / 4000 / 2 / 0 / 2 / 0 / 0
Affected population: greylag goose

Outbreak location 2: Fereidun kenar wildlife refuge, Babolsar,
Mazandaran
Started: 29 Nov 2021
Epidemiological unit: natural park
Animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated / 700 / 1 / 1/ 0 / 0 / 0
Affected population: swan N-type has not been yet identified.

Epidemiology
Source of the outbreak(s) or origin of infection: contact with wild
species.
Epidemiological comments: the event was reported according to the Iran
passive surveillance in place.
A post-outbreak investigation to trace the source of infection is
ongoing to detect the probable spread and circulation of this subtype.
Active surveillance is ongoing

Control measures at event level
Domestic control measures applied: traceability; screening;
quarantine; disinfection; disinfestation

Domestic control measures to be applied: surveillance within
containment and or the protection zone; surveillance outside
containment and or the protection zone

Diagnostic test results
Laboratory name and type / Species / Outbreaks / Test / Test date /
Result
Central Veterinary Reference laboratory of Iran Veterinary
Organization (IVO) national laboratory / birds / 2 / real-time
polymerase chain reaction (real-time PCR) / positive