Summary
Report type: immediate notification
Started: 27 Aug 2021
Confirmed: 2 Sep 2021
Reported: 15 Sep 2021
Reason for notification: recurrence
Last occurrence: 13 Dec 2020
Causal agent: highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: clinical, laboratory
This event pertains to a defined zone within the country.

New outbreaks (3)
Summary of outbreaks
Total outbreaks (3)

Outbreak location 1: Zateryanny mir, Chelyabinsk gorsovet,
Chelyabinsk
Started: 3 Sep 2021
Epidemiological unit: Zoo
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Mute Swan (_Cygnus olor_): Anatidae-Anseriformes / - / 2 / 2 / 0 / 0 /
0
Birds / - / 2 / 2 / 0 / 0 / 0

Outbreak location 2: Chelyabinsk, Chelyabinsk gorsovet, Chelyabinsk
Started: 26 Aug 2021
Epidemiological unit: Backyard
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 1 / 1 / 1 / 0 / 0 / 0
Affected population: Geese

Outbreak location 3: Gorkoe, Uvelskiy rayon, Chelyabinsk
Started: 27 Aug 2021
Epidemiological unit: Other
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Common Teal (_Anas crecca_): Anatidae-Anseriformes / - / 1 / - / 6 / 0
/ 0

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

Control measures applied in domestic and wild: zoning; surveillance
within containment and/or the protection zone; quarantine; screening;
official disposal of carcasses, by-products, and waste; movement
control inside the country; disinfection; control of wildlife
reservoirs

Diagnostic test results
Laboratory name and type / Species / Test / Test date / Result
Chelyabinskaya Veterinary Laboratory local laboratory/ Common
Teal/Birds/Mute Swan / polymerase chain reaction (PCR) / positive
Federal Centre for Animal Health (FGBI "ARRIAH") OIE reference
laboratory / Common Teal/Birds/Mute Swan / real-time polymerase chain
reaction (real-time PCR) / positive
Federal Centre for Animal Health (FGBI "ARRIAH") OIE reference
laboratory / Common Teal/Birds/Mute Swan / gene sequencing / positive