Highly pathogenic avian influenza,
Information received on 25/11/2015 from Dr Dong Pham Van, Director General, Chief Veterinary Officer, Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoļ, Vietnam
Report type Follow-up report No. 1
Date of start of the event 07/11/2015
Date of confirmation of the event 12/11/2015
Report date 25/11/2015
Date submitted to OIE 25/11/2015
Date event resolved 23/05/2016
Reason for notification Recurrence of a listed disease
Date of previous occurrence 27/10/2015
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N1
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (17/11/2015)
Follow-up report No. 1 (25/11/2015)
Follow-up report No. 2 (27/11/2015)
Follow-up report No. 3 (03/12/2015)
Follow-up report No. 4 (10/12/2015)
Follow-up report No. 5 (16/12/2015)
Follow-up report No. 6 (26/02/2016)
Follow-up report No. 7 (10/04/2016)
Follow-up report No. 8 (27/04/2016)
Follow-up report No. 9 (10/06/2016)
New outbreaks (1)
Outbreak 1 Cam Thang, Cam Thang, Cam Xuyen, Ha Tinh
Date of start of the outbreak 16/11/2015
Outbreak status Resolved (10/12/2015)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 649 649 100 549 0
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 649 649 100 549 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 100.00% 15.41% 15.41% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Disinfection / Disinfestation
  • Stamping out
  • Surveillance within containment and/or protection zone
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Regional Animal Health Office (RAHO 3) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 19/11/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations