Rift Valley fever,
Libya
Information received on 09/05/2020 from Dr Zakaria Mohamed Mustafa Elkhatal, Director General, National Centre for Animal Health (NCAH), Ministry of Agriculture, Animal & Marine Wealth, Tripoli, Libya
Summary
Report type Follow-up report No. 4
Date of start of the event 12/12/2019
Date of confirmation of the event 13/01/2020
Report date 09/05/2020
Date submitted to OIE 09/05/2020
Reason for notification First occurrence of a listed disease in the country
Causal agent Rift Valley fever virus
Nature of diagnosis Clinical
This event pertains to the whole country
Related reports Immediate notification (15/01/2020)
Follow-up report No. 1 (03/02/2020)
Follow-up report No. 2 (13/02/2020)
Follow-up report No. 3 (27/02/2020)
Follow-up report No. 4 (09/05/2020)
Follow-up report No. 5 (24/06/2020)
Follow-up report No. 6 (18/07/2020)
Follow-up report No. 7 (26/10/2020)
New outbreaks (1)
Outbreak 1 South, Elhamra, Bint bey, Awbari
Date of start of the outbreak 17/04/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Sheep 65 7 2 0 0
Affected population Active surveillance is done. A total of 419 blood samples were collected by the Surveillance team from sheep and goats within and outside the protection area (zone) around the infected farms. Signs reported by the surveillance team: abortion and respiratory manifestation in some cases.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Sheep 65 7 2 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Sheep 10.77% 3.08% 28.57% 3.08%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Illegal movement of animals
  • Vectors
Epidemiological comments To complete the project (SORO.LIB 801.CHA) about Rift Valley fever in Libya, sample collection (from sheep and goats) from the Southern area was completed by the surveillance team. The total number of samples is 426. The following signs were reported by the surveillance team: abortion in all stages of gestation, new-born deaths after respiratory manifestation and diarrhoea in some cases. The signs appeared in goats that were involved in illegal movement.
Control measures
Measures applied
  • Movement control inside the country
  • Traceability
  • Quarantine
  • Disinfection
  • Control of vectors
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Vector surveillance
  • Ante and post-mortem inspections
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations