Summary
Report type: follow-up No. 1
Started: 11 Nov 2022
Confirmed: 12 Nov 2022
Reported: 22 Nov 2022
Reason for notification: recurrence
Last occurrence: 22 Dec 2022
Causal agent: highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: clinical, laboratory
This event pertains to the whole country.

Outbreak 1: Clones, Monaghan
Started: 11 Nov 2022
Epidemiological unit: farm
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds (domestic) / 3816 / - / - / 3816 / - / -

Affected population: On 12 Nov 2022, a commercial turkey fattening
farm reported an increase in mortality of the birds. Samples were
collected and submitted to the Irish Central Veterinary Research
Laboratory for avian influenza testing. On 13 Nov, these
samples returned a result confirming the presence of avian influenza
subtype H5N1. On 14 Nov the subtype was confirmed to be highly
pathogenic.

Outbreak 2: Clones, Monaghan
Started: 17 Nov 2022
Epidemiological unit: farm
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds (domestic) / 4100 / - / - / 4100 / - / -

Affected population: On 18 Nov 2022, a commercial turkey fattening
farm reported an increase in mortality of the birds.

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

Epidemiological comments: On 18 Nov 2022, a commercial turkey
fattening farm reported an increase in mortality of the birds. Samples
were collected and submitted to the Irish Central Veterinary Research
Laboratory for avian influenza testing. On 19 Nov, these
samples returned a result confirming the presence of avian influenza
subtype H5N1. On 22 Nov the subtype was confirmed to be highly
pathogenic.

Control measures applied in domestic animals: zoning; traceability;
surveillance within the restricted zone; stamping out; official
disposal of carcasses, by-products, and waste; movement control

Control measures to be applied in domestic animals: disinfection

Diagnostic test results
Laboratory name and type / Species / Test / Last result date / Result
Central Veterinary Research Laboratory - DAFM / birds / real-time
polymerase chain reaction (real-time PCR) / 18 Nov 2022 / positive
Central Veterinary Research Laboratory - DAFM / birds / gene
sequencing / 21 Nov 2022 / positive