General information
Report type: immediate notification
Started: 17 Jan 2022
Confirmed: 25 Jan 2022
Reported: 28 Jan 2022
Reason for notification: recurrence
Last occurrence: 2 Sep 2021
Manifestation of disease: clinical disease
Causal agent: highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: clinical, necropsy, laboratory
This event pertains to the whole country.

Outbreak location: Gramthan-1, Khuniyakatta, Morang, Koshi, East
Started: 17 Jan 2022
Epidemiological unit: farm
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 5160 / 3510 / 3510 / 1650 / 0 / 0
Affected population: commercial layers 70 weeks and 32 weeks old

Epidemiology
Source of the outbreak(s) or origin of infection: unknown or
inconclusive
Epidemiological comments: Wild birds like cranes and egrets have been
seen near the farm where there is a small irrigation canal.

Control measures at event level
Domestic control measures applied: stamping out; quarantine; official
disposal of carcasses, by-products, and waste; official destruction of
animal products; movement control inside the country; disinfection;
surveillance within containment and/or the protection zone;
surveillance outside containment and/or the protection zone

Diagnostic test results
Laboratory name and type / Species / Outbreaks / Test / Test date /
Result
Central veterinary laboratory (CVL), tripureshwor (national
laboratory) / birds / 1 / real-time reverse transcription polymerase
chain reaction (rRT-PCR) / 25 Jan 2022 / positive