OIE: Low pathogenic avian influenza (poultry), Dominican Republic

Summary
Report type Follow-up report No. 1
Date of start of the event 30/09/2017
Date of confirmation of the event 18/10/2017
Report date 13/12/2017
Date submitted to OIE 13/12/2017
Reason for notification Recurrence of a listed disease
Date of previous occurrence 26/02/2009
Manifestation of disease Clinical disease
Causal agent Low pathogenic avian influenza virus
Serotype H5N2
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (24/10/2017)
Follow-up report No. 1 (13/12/2017)
New outbreaks (3)
Outbreak 1 San Juan, Sabana Alta, San Juan de la Maguana, SAN JUAN
Date of start of the outbreak 10/10/2017
Outbreak status Resolved (07/12/2017)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 46500 12657 12657 33843 0
Affected population Broiler chicken in three sheds
Outbreak 2 La Vega, R韔 Verde Arriba, Arroyo Hondo, La Concepci髇 de la Vega, LA VEGA
Date of start of the outbreak 10/10/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 34000 1639 1639 0 0
Affected population Layer hens in five sheds
Outbreak 3 La Vega, Cutup?, R韔 Verde Arriba, LA VEGA
Date of start of the outbreak 30/10/2017
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 27400 1257 1257 0 0
Affected population Layer hens in four sheds
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 107900 15553 15553 33843 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 14.41% 14.41% 100.00% 45.78%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments No new outbreaks have been detected around the index outbreak. The index outbreak is closed. Three new outbreaks have been confirmed positive for avian influenza (H5N2); one of them is resolved. The other outbreaks are under official control until all control measures have been implemented. Surveillance is still on-going in the outbreak area (1 km) and in the area around the outbreaks (3-5 km), including screening and traceability.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Screening
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Ante and post-mortem inspections
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Disinfection
  • Process to inactivate the pathogenic agent in products or by-products
Diagnostic test results
Laboratory name and type Species Test Test date Result
Central veterinary laboratory (National laboratory) Birds agar-gel immunodiffusion (AGID) 30/11/2017 Positive
National Veterinary Services Laboratory, United States (OIE Reference Laboratory) Birds haemagglutination inhibition test (HIT) 07/12/2017 Positive
National Veterinary Services Laboratory, United States (OIE Reference Laboratory) Birds real-time PCR 01/12/2017 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.