General information
Report type: immediate notification
Started: 15 Dec 2021
Confirmed: 30 Dec 2021
Reported: 21 Jan 2022
Reason for notification: recurrence
Last occurrence: 28 Nov 2015
Manifestation of disease: clinical disease
Causal agent: highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: clinical, laboratory
This event pertains to the whole country.

Outbreak location: village of Nambe, Koubri, Kadiogo, Centre
Date of start of the outbreak: 15 Dec 2021
Epidemiological unit: farm
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 150 000 / 117 842 / 117 842 / 32 158 / 0 / 0
Affected population: 39, 54, 69-week old Novogen laying hens in 3
houses. An up-to-date prophylaxis protocol against the main avian
diseases including low pathogenic avian influenza was applied.

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

Epidemiological comments: deaths occurred suddenly, with high
mortality and morbidity reported in all poultry categories. The
disease spread at an unprecedented speed. Risk factors such as poultry
gatherings at sale points or fairs for the end-of-year celebrations,
as well as the Harmatan, may have made the health situation worse.

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

Wild control measures applied: control of wildlife reservoirs,
screening, official disposal of carcasses, by-products and waste

Diagnostic test results:
Laboratory name and type / Species / Outbreaks / Test / Test date /
Result
Experimental Zooprophylactic Institute (IZS), Venezie (OIE Reference
Laboratory) / birds / 1 / real-time reverse transcription polymerase
chain reaction (rRT-PCR) / 30 Dec 2021 / positive
Laboratoire national d´Elevage (LNE) (National Laboratory) / birds / 1
/ real-time reverse transcription polymerase chain reaction (rRT-PCR)
/ 17 Dec 2021 / positive