Highly pathogenic avian influenza,
Senegal
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.
Map of outbreak locations