Information received on 07/01/2021 from Dr Mbargou Lo, Directeur des Services vétérinaires, Direction des Services vétérinaires, Ministère de l´Elevage et des Productions animales, Dakar, Senegal
Summary
Report type
Immediate notification
Date of start of the event
23/12/2020
Date of confirmation of the event
30/12/2020
Report date
06/01/2021
Date submitted to OIE
07/01/2021
Reason for notification
First occurrence of a listed disease in the country
Causal agent
Highly pathogenic avian influenza virus
Serotype
H5N1
Nature of diagnosis
Clinical, Laboratory (advanced), Necropsy
This event pertains to
a defined zone within the country
New outbreaks (1)

Outbreak 1
Ndiakhat, Pout, Thies
Date of start of the outbreak
23/12/2020
Outbreak status
Resolved (07/01/2021)
Epidemiological unit
Farm
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
100000
58000
58000
42000
0
Affected population
Layers whose age range is between [9-18] months and [18-24] months. Poultry are kept in closed buildings with an automatic feed and water supply system. The poultry farm is located away from households.
Summary of outbreaks
Total outbreaks: 1
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Birds
100000
58000
58000
42000
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
58.00%
58.00%
100.00%
100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
Unknown or inconclusive
Epidemiological comments
The disease was detected by the farm manager on 23 December 2020, through a drop in water consumption and the recording of high fatalities. The morbidity and mortality rates are 58% and the lethality rate is 100%. The main clinical signs observed are oedema, cyanosis, congestion of the crests and barbs and prostration.

Control measures
Measures applied
Movement control inside the country
Surveillance outside containment and/or protection zone
Surveillance within containment and/or protection zone
Quarantine
Official destruction of animal products
Official disposal of carcasses, by-products and waste
Stamping out
Control of wildlife reservoirs
Disinfection
Process to inactivate the pathogenic agent in products or by-products
Vaccination prohibited
No treatment of affected animals
Measures to be applied
Traceability
Diagnostic test results
Laboratory name and type
Species
Test
Test date
Result
Dakar National Laboratory for Livestock and Veterinary Research (LNERV) (National laboratory)
Birds
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)
30/12/2020
Positive
Dakar National Laboratory for Livestock and Veterinary Research (LNERV) (National laboratory)
Birds
reverse transcription - polymerase chain reaction (RT-PCR)
30/12/2020
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.