High Death Rate Observed
In Wild Birds In Iran

From Patricia Doyle, PhD
OIE Disease Information
Information received on 12 and 13 Oct 2005 (dated 12 Oct) from Dr Mansour Sayari, head of Iran Veterinary Organization, Ministry of Jihad-e-Agriculture, Tehran:
Reason for immediate notification: an emerging disease with significant morbidity or mortality, or zoonotic potential.
Precise identification of agent: no agent has been identified yet.
Date of start of the event: 2 Oct 2005.
Details of outbreak:
First administrative division (province): West Azerbaijan Lower administrative division: Poldasht: Type of epidemiological unit: Name of the location: Aras River (bordering Nakhjavan) Species: fau
Number of animals in the outbreak
susceptible / cases / deaths / destroyed / slaughtered
/ / 3673 / 0 / 0
Description of affected population: wild waterfowl (wild ducks).
Diagnosis: no postmortem lesions are seen in dead birds; weakness and death are the only clinical evidence.
The following tests were done for avian influenza virus subtypes H5, H7, and H9 and all the results were negative.
The Central Veterinary Laboratory of Iran performed haemagglutination inhibition (using serum samples) on 2 Oct 2005 and rapid test for influenza A (using faecal samples) and PCR (polymerase chain reaction) (using tissues)on 8 Oct 2005.
Source of outbreak or origin of infection: unknown or inconclusive.
Control measures undertaken:
- quarantine;
- movement control inside the country;
- screening;
- zoning;
- disinfection of infected areas.
Treatment of affected animals: no.
Final report: no.
The location of this outbreak is the very most north western piece of real estate in Iran, somewhere near the Aras River. West Azerbiajan is nestled between the borders of Turkey, Armenia, and Azerbiajan.
While we are happy to have the negative tests for avian influenza, it would be very helpful to know more about the geography of this outbreak in relation to the migratory wild bird pathways and the other outbreaks in the region (Romania and Turkey have been confirmed to be H5N1). A definitive diagnosis of what is killing these birds would be most helpful, or a negative H5N1 from a world reference lab would be useful in solving this unknown outbreak. Any information would be appreciated. - Mod.PC
Patricia A. Doyle, PhD
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Zhan le Devlesa tai sastimasa
Go with God and in Good Health



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