OIE: Highly pathogenic avian influenza (H5), Bulgaria

Summary
Report type: immediate notification
Started: 23 Apr 2021
Confirmed: 26 Apr 2021
Reported: 5 May 2021
Reason for notification: recurrence
Last occurrence: 10 May 2019
Causal agent: Highly pathogenic avian influenza virus
Serotype: H5
Nature of diagnosis: clinical, laboratory
This event pertains to a defined zone within the country.

New outbreaks (3)
Outbreak location 1: Maritsa, Plovdiv
Started: 4 May 2021
Epidemiological unit: farm
Animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 16 372 / 57 / - / - / - / -

Outbreak location 2: Maritsa, Plovdiv
Started: 3 May 2021
Epidemiological unit: farm
Animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 62 478 / 140 / - / - / - / -

Outbreak location 3: Maritsa, Plovdiv
Started: 23 Apr 2021
Epidemiological unit: farm
Animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 43 000 / 21 / - / - / - / -

Summary of outbreaks (3)
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 121 850 / 218 / - / - / - / -

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

Control measures at event level
Domestic control measures applied: surveillance within containment
and/or protection zone,
Movement control inside the country

Domestic control measures to be applied: disinfestation, disinfection,
official disposal of carcasses, by-products, and waste, stamping out

Diagnostic test results
Laboratory name and type / Species / Outbreaks/ Test / Test date /
Result
Laboratory for avian influenza and Newcastle disease, BGR National
Laboratory / Birds / 3 / Polymerase chain reaction (PCR) / From 23 Apr
to 5 May 2021 / Positive