Highly pathogenic avian influenza,
Myanmar
Information received on 07/02/2017 from Dr Ye Tun Win, Chief Veterinary Officer Director General, Livestock Breeding and Veterinary Department, Ministry of Livestock and Fisheries, Nay Pyi Taw, Myanmar
Summary
Report type Immediate notification (Final report)
Date of start of the event 15/03/2016
Date of confirmation of the event 14/12/2016
Report date 07/02/2017
Date submitted to OIE 07/02/2017
Date event resolved 06/04/2016
Reason for notification New strain of a listed disease
Manifestation of disease Sub-clinical infection
Causal agent Highly pathogenic avian influenza virus
Serotype H5N6
Nature of diagnosis Laboratory (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (1)
Outbreak 1 (SAN:16-03146) Monglar, Monglar, Kyaingtong, Shan State
Date of start of the outbreak 15/03/2016
Outbreak status Resolved (06/04/2016)
Epidemiological unit Livestock market
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 300 5 0 300
Affected population Layer chicken from collecting points
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 300 5 0 300
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 1.67% ** ** **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Introduction of new live animals
Epidemiological comments Risk-based surveillance of H7N9 in targeted border townships and live bird markets in Yangon and Mandalay has been conducted since 2013 by cooperation between the Livestock Breeding and Veterinary Department and FAO. Until now, the 5th round of the risk-based surveillance of H7N9 has been conducted and 16,545 chickens and ducks oropharyngeal swabs, 7,765 environmental swabs and 705 duck sera were collected from poultry collecting points, poultry processing sites, formal city markets and live bird markets. Those samples were tested in Mandalay and Yangon Diagnostic Laboratory and then confirmed and sequenced by the Australian Animal Health Laboratory, Geelong. From this 5th round of active surveillance, clade 2.3.4.4 H5N6 HPAI virus, which shares 99% similarity with A/chicken/Hubei/XG18/2015(H5N6) and 98% similarity with A/duck/Guangdong/GD01/2014(H5N6), was detected in the samples collected from chicken and environmental swabs in Monglar, which has a common border with China. H5N6 positive samples were taken from apparently healthy chickens imported from China, as well as from the environment. H5N6 positive samples were more concentrated geographically and temporally, and were found specifically in live bird markets, in ducks and chickens imported from China (unknown breeds).
Control measures
Measures applied
  • Movement control inside the country
  • Disinfection / Disinfestation
  • Dipping / Spraying for control of vectors or parasites
  • Stamping out
  • Surveillance within containment and/or protection zone
  • Zoning
  • 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
Australian Animal Health Laboratory, Geelong (OIE Reference Laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 14/12/2016 Positive
Future Reporting
The event is resolved. No more reports will be submitted.
Map of outbreak locations