Highly pathogenic avian influenza,
United States of America
Information received on 08/05/2015 from Dr John Clifford, Official Delegate, Chief Trade Advisor, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
Summary
Report type Follow-up report No. 15
Date of start of the event 10/12/2014
Date of confirmation of the event 15/12/2014
Report date 08/05/2015
Date submitted to OIE 08/05/2015
Date event resolved 13/11/2015
Reason for notification Recurrence of a listed disease
Date of previous occurrence 2004
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (16/12/2014)
Follow-up report No. 1 (07/01/2015)
Follow-up report No. 2 (13/01/2015)
Follow-up report No. 3 (22/01/2015)
Follow-up report No. 4 (03/02/2015)
Follow-up report No. 5 (17/02/2015)
Follow-up report No. 6 (24/02/2015)
Follow-up report No. 7 (06/03/2015)
Follow-up report No. 8 (12/03/2015)
Follow-up report No. 9 (20/03/2015)
Follow-up report No. 10 (31/03/2015)
Follow-up report No. 11 (08/04/2015)
Follow-up report No. 12 (15/04/2015)
Follow-up report No. 13 (24/04/2015)
Follow-up report No. 14 (01/05/2015)
Follow-up report No. 15 (08/05/2015)
Follow-up report No. 16 (20/05/2015)
Follow-up report No. 17 (29/05/2015)
Follow-up report No. 18 (09/06/2015)
Follow-up report No. 19 (17/06/2015)
Follow-up report No. 20 (26/06/2015)
Follow-up report No. 21 (02/07/2015)
Follow-up report No. 22 (22/07/2015)
Follow-up report No. 23 (31/07/2015)
Follow-up report No. 24 (10/08/2015)
Follow-up report No. 25 (17/08/2015)
Follow-up report No. 26 (24/08/2015)
Follow-up report No. 27 (01/09/2015)
Follow-up report No. 28 (08/09/2015)
Follow-up report No. 29 (14/09/2015)
Follow-up report No. 30 (21/09/2015)
Follow-up report No. 31 (07/10/2015)
Follow-up report No. 32 (13/10/2015)
Follow-up report No. 33 (13/11/2015)
Follow-up report No. 34 (18/11/2015)
New outbreaks (32)
Outbreak 1 (111) Meeker County 7, Meeker, MINNESOTA
Date of start of the outbreak 20/04/2015
Outbreak status Resolved (24/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 40200 40200 0
Affected population A commercial turkey flock.
Outbreak 2 (110) Chippewa County, Chippewa, MINNESOTA
Date of start of the outbreak 22/04/2015
Outbreak status Resolved (20/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 65000 65000 0
Affected population A commercial turkey flock.
Outbreak 3 (119) Osceola County 2, Osceola, IOWA
Date of start of the outbreak 22/04/2015
Outbreak status Resolved (31/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 260000
Affected population A commercial chicken layer flock.
Outbreak 4 (120) O''''Brien County 2, O''''Brien, IOWA
Date of start of the outbreak 23/04/2015
Outbreak status Resolved (02/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 98040
Affected population A commercial chicken layer flock.
Outbreak 5 (118) O''''''''Brien County, O''''''''Brien, IOWA
Date of start of the outbreak 23/04/2015
Outbreak status Resolved (02/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 240000
Affected population A commercial chicken layer flock.
Outbreak 6 (112) Kandiyohi County 20, Kandiyohi, MINNESOTA
Date of start of the outbreak 23/04/2015
Outbreak status Resolved (23/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 51000 51000 0
Affected population A commercial turkey flock.
Outbreak 7 (116) Steele County, Steele, MINNESOTA
Date of start of the outbreak 23/04/2015
Outbreak status Resolved (27/06/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 82900 82900 0
Affected population A commercial turkey flock.
Outbreak 8 (113) Kandiyohi County 21, Kandiyohi, MINNESOTA
Date of start of the outbreak 23/04/2015
Outbreak status Resolved (06/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 8400 8400 0
Affected population A commercial turkey flock.
Outbreak 9 (107) McCraken County, McCraken, KENTUCKY
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (22/07/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Snow Goose:Anser caerulescens(Anatidae)
Affected population Wild bird surveillance.
Outbreak 10 (108) McCraken County, McCraken, KENTUCKY
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (22/07/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Ring-necked Duck:Aythya collaris(Anatidae)
Affected population Wild bird surveillance.
Outbreak 11 (114) Kandiyohi County 22, Kandiyohi, MINNESOTA
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (12/11/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 32200 32200 0
Affected population A commercial turkey flock.
Outbreak 12 (121) Swift County 3, Swift, MINNESOTA
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (20/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 18000 18000 0
Affected population A commercial turkey flock.
Outbreak 13 (117) Stearns County 11, Stearns, MINNESOTA
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (11/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 19200 19200 0
Affected population A commercial turkey flock.
Outbreak 14 (122) Sioux County 2, Sioux, IOWA
Date of start of the outbreak 24/04/2015
Outbreak status Resolved (11/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 3660000
Affected population A commercial chicken layer flock.
Outbreak 15 (115) Kandiyohi County 23, Kandiyohi, MINNESOTA
Date of start of the outbreak 25/04/2015
Outbreak status Resolved (24/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 4200 4200 0
Affected population A commercial turkey flock.
Outbreak 16 (130) Kossuth County, Kossuth, IOWA
Date of start of the outbreak 25/04/2015
Outbreak status Resolved (01/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 18800
Affected population A commercial chicken layer flock.
Outbreak 17 (125) Buena Vista County 2, Buena Vista, IOWA
Date of start of the outbreak 26/04/2015
Outbreak status Resolved (20/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 41000
Affected population A commercial turkey flock.
Outbreak 18 (123) Kandiyohi County 24, Kandiyohi, MINNESOTA
Date of start of the outbreak 26/04/2015
Outbreak status Resolved (22/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 13200 13200 0
Affected population A commercial turkey flock.
Outbreak 19 (124) Stearns County 12, Stearns, MINNESOTA
Date of start of the outbreak 26/04/2015
Outbreak status Resolved (19/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 202530
Affected population A commercial chicken layer flock.
Outbreak 20 (127) Barron County 3, Barron, WISCONSIN
Date of start of the outbreak 27/04/2015
Outbreak status Resolved (19/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 96500 96500 0
Affected population A commercial turkey flock.
Outbreak 21 (129) Buena Vista County 4, Buena Vista, IOWA
Date of start of the outbreak 27/04/2015
Outbreak status Resolved (11/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 59300
Affected population A commercial chicken layer flock.
Outbreak 22 (126) Kandiyohi County 25, Kandiyohi, MINNESOTA
Date of start of the outbreak 27/04/2015
Outbreak status Resolved (26/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 11200 11200 0
Affected population A commercial turkey flock.
Outbreak 23 (128) Buena Vista County 3, Buena Vista, IOWA
Date of start of the outbreak 27/04/2015
Outbreak status Resolved (21/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 40800
Affected population A commercial turkey flock.
Outbreak 24 (133) Buena Vista County 5, Buena Vista, IOWA
Date of start of the outbreak 27/04/2015
Outbreak status Resolved (11/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 5637400
Affected population A commercial chicken layer flock.
Outbreak 25 (138) Clay County, Clay, IOWA
Date of start of the outbreak 28/04/2015
Outbreak status Resolved (27/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 93000
Affected population A commercial chicken layer flock.
Outbreak 26 (132) Pocahontas County, Pocahontas, IOWA
Date of start of the outbreak 28/04/2015
Outbreak status Resolved (08/09/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 16800
Affected population A commercial turkey flock.
Outbreak 27 (134) Stearns County 13, Stearns, MINNESOTA
Date of start of the outbreak 28/04/2015
Outbreak status Resolved (18/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 14800 14800 0
Affected population A commercial turkey flock.
Outbreak 28 (131) Otter Tail County 3, Otter Tail, MINNESOTA
Date of start of the outbreak 28/04/2015
Outbreak status Resolved (06/07/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 36400 36400 0
Affected population A commercial turkey flock.
Outbreak 29 (135) Stearns County 14, Stearns, MINNESOTA
Date of start of the outbreak 28/04/2015
Outbreak status Resolved (19/06/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 20500 20500 0
Affected population A commercial turkey flock.
Outbreak 30 (109) Yellow Medicine County, Yellow Medicine, MINNESOTA
Date of start of the outbreak 29/04/2015
Outbreak status Resolved (22/07/2015)
Epidemiological unit Not applicable
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cooper's Hawk:Accipiter cooperii(Accipitridae)
Affected population Wild bird surveillance.
Outbreak 31 (137) Sioux County 3, Sioux, IOWA
Date of start of the outbreak 29/04/2015
Outbreak status Resolved (11/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 165174
Affected population A commercial chicken layer flock.
Outbreak 32 (136) Buena Vista County 6, Buena Vista, IOWA
Date of start of the outbreak 29/04/2015
Outbreak status Resolved (11/08/2015)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 29700
Affected population A commercial turkey flock.
Summary of outbreaks Total outbreaks: 32
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 11076244 ** 513700 0
Snow Goose:Anser caerulescens(Anatidae) **
Ring-necked Duck:Aythya collaris(Anatidae) **
Cooper's Hawk:Accipiter cooperii(Accipitridae) **
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** ** ** **
Snow Goose:Anser caerulescens(Anatidae) ** ** ** **
Ring-necked Duck:Aythya collaris(Anatidae) ** ** ** **
Cooper's Hawk:Accipiter cooperii(Accipitridae) ** ** ** **
*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
  • Contact with wild species
Epidemiological comments The USDA Animal and Plant Health Inspection Service (APHIS), in conjunction with State Departments of Agriculture and Wildlife, are continuing to conduct a comprehensive epidemiological investigation and enhanced surveillance (including wild bird surveillance of hunter harvested birds) in response to the HPAI H5N8 and H5N2 wild bird related events. Novel avian influenza virus of Eurasian origin (EA-H5N8 clade 2.3.4.4) spread rapidly along wild bird migratory pathways during 2014. Introduction of this EA-H5N8 virus into the Pacific Flyway sometime during 2014 has allowed mixing with North American (AM) lineage viruses and generated new combinations with genes from both EA and AM origin (or “reassortant” viruses) such as this EA/AM H5N2-reassortant detected in the US. In addition, overlap of the Pacific, Central, and Mississippi Americas flyways has resulted in movement of the virus to the central part of the country. The EA-H5 clade 2.3.4.4 viruses are highly pathogenic for poultry.
Control measures
Measures applied
  • Movement control inside the country
  • Disinfection / Disinfestation
  • Quarantine
  • Stamping out
  • 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
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 27/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 28/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 29/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 30/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 01/05/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 27/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 28/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 29/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 30/04/2015 Positive
National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 01/05/2015 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations