Summary
Report type: immediate notification
Started: 6 Dec 2021
Confirmed: 10 Dec 2021
Reported: 10 Dec 2021
Reason for notification: recurrence
Last occurrence: 1 Jun 2021
Causal agent: Highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: laboratory
This event pertains to a defined zone within the country.

Outbreak location 1: Regional unit of Evros, Alexandroupoli, East
Macedonia and Thrace
Started: 6 Dec 2021
Epidemiological unit: natural park
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Mute swan (_Cygnus olor_): Anatidae-Anseriformes / - / 1 / 1 / - / - /
-
Affected population: one moribund mute swan was found in a wetland
area and died a short time later. Samples were collected and tested
positive for HPAI H5N1.

Epidemiology
Source of the outbreak(s) or origin of infection: unknown or
inconclusive

Control measures applied in wild: official disposal of carcasses,
by-products, and waste.

Diagnostic test results
Laboratory name and type / Species / Outbreaks / Test / Test date /
Result
Directorate of Veterinary Center of Thessaloniki, Department of
Pathology of birds, bees, and aquaculture animals (national
laboratory) / mute swan / 1 / real-time polymerase chain reaction
(real-time PCR) / 6 Dec 2021 / positive
Directorate of Veterinary Center of Thessaloniki, Department of
Pathology of birds, bees, and aquaculture animals (national
laboratory) / mute swan / 1 / gene sequencing / 6 Dec 2021 / positive