Highly pathogenic avian influenza,
Information received on 01/06/2017 from Dr Unesu Hildah Ushewokunze-Obatolu, Principal Director, , Department of Livestock and Veterinary Services, Harare, Zimbabwe
Report type Immediate notification
Date of start of the event 17/05/2017
Date of confirmation of the event 01/06/2017
Report date 01/06/2017
Date submitted to OIE 01/06/2017
Date event resolved 21/11/2017
Reason for notification New strain of a listed disease in the country
Causal agent Highly pathogenic avian influenza virus
Serotype H5N8
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (01/06/2017)
Follow-up report No. 1 (11/06/2017)
Follow-up report No. 2 (19/06/2017)
Follow-up report No. 3 (30/06/2017)
Follow-up report No. 4 (10/07/2017)
Follow-up report No. 5 (17/07/2017)
Follow-up report No. 6 (24/07/2017)
Follow-up report No. 7 (07/08/2017)
Follow-up report No. 8 (29/08/2017)
Follow-up report No. 9 (13/09/2017)
Follow-up report No. 10 (21/11/2017)
New outbreaks (1)
Outbreak 1 (HPAI_ZIM_1_2017) LANARK, BEATRICE, SEKE, Mashonaland East
Date of start of the outbreak 17/05/2017
Outbreak status Resolved (21/11/2017)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2000000 8228 8228 794792 0
Affected population Self-contained commercial poultry breeding farm for broilers and layers with a total census of 2 million birds.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 2000000 8228 8228 794792 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 0.41% 0.41% 100.00% 40.15%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments The affected farm has 8 separately managed sites which are at least 1km apart. One of the eight sites was affected, a parent breeding unit for broilers with 83,000 birds. A total of 3,045 birds died within a week at this site showing signs consistent with highly pathogenic avian influenza. The affected site is close to a small dam where there are a number of different migratory waterfowl, which are tentatively suspected to be source of infection.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Traceability
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Zoning
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Onderstepoort Veterinary Institute, South Africa (Regional Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 29/05/2017 Positive
Onderstepoort Veterinary Institute, South Africa (Regional Reference Laboratory) Birds virus sequencing 01/06/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations