OIE: Highly pathogenic avian influenza viruses (poultry) (infection with H5N1), Senegal

General information
Report type: immediate notification
Started: 25 Jan 2022
Confirmed: 2 Feb 2022
Reported: 9 Feb 2022
Reason for notification: recurrence
Last occurrence: 1 Feb 2022
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: Pelican nesting box (0.58 ha of surface) at the
Djoudj National Bird Park, Ndiaye Mberess, Dagana, Saint Louis.
Date of start of the outbreak: 25 Jan 2022
Epidemiological unit: other
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Great White Pelican (_Pelecanus onocrotalus_):
Pelecanidae-Phaethontiformes / 11563 / 883 / 758 / 0 / 0 / 0
Affected population: Great white pelican (_Pelecanus onocrotalus-).
Out of 758 dead animals, 754 young animals and 4 adults.

Source of the outbreak(s) or origin of infection: introduction of new
Epidemiological comments: the Djoudj National Bird Park is an
ornithological site located in Dagana Department and considered a
UNESCO World Heritage Site. It has the status of a wetland of
international importance (Ramsar site No. 138) and is the core of the
transboundary biosphere reserve of the Delta of the Senegal River. The
disease occurs during the breeding period of the pelicans, when they
are incubating, hatching, and growing juveniles. It is also the period
of the great eastern transatlantic migration of waterbirds, some of
which stay in the northern wetlands from November to March, the epidemiological situation is as follows:
- Susceptible animals at risk: 11 563 pelicans;
- Total number of sick animals: 883;
- Total number of dead animals: 758, including 754 juveniles and 4
- Morbidity rate: 7.6%;
- Mortality rate: 6.5%;
- Lethality rate: 86%

Control measures at event level
Domestic control measures applied: surveillance within containment
and/or the protection zone
Domestic control measures to be applied: official destruction of
animal products; surveillance outside containment and/or the
protection zone; disinfestation
Wild control measures applied: disinfection; official disposal of
carcasses, by-products, and waste; process to inactivate the
pathogenic agent in products or by-products; surveillance within
containment and/or the protection zone
Wild control measures to be applied: surveillance outside containment
and/or the protection zone; disinfestation

Diagnostic test results
Laboratory name and type / Species / Outbreaks / Test / Test date /
(LNERV) Dakar
(national laboratory) / great white pelican / 1 / real-time polymerase
chain reaction (real-time PCR) / 2 Feb 2022 / positive