OIE: Low pathogenic avian influenza (poultry), Portugal

Information received on 04/01/2008 from Mr Carlos Agrela Pinheiro, Chief Veterinary Officer, Director General, Direc?ao-Geral de Veterinária, Ministério da Agricultura, LISBONNE, Portugal

Summary

Report type Immediate notification
Start date 21/12/2007
Date of confirmation of event 21/12/2007
Report date 04/01/2008
Date submitted to OIE 04/01/2008
Reason for notification Reoccurrence of a listed disease
Date of previous occurrence 23/10/2007
Manifestation of disease Sub-clinical infection
Causal agent Low pathogenic avian influenza virus (serotype H5)
Serotype Pending
Nature of diagnosis Laboratory (advanced)
Report pertains to Entire country

New outbreaks

Outbreak 1 (002/2007) Atalaia - Lourinh?, OESTE
Date of start of outbreak 21/12/2007
Outbreak status Resolved (21/12/2007)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 988 0 988 0
Affected population a farm with red-legged partridges (Alectoris rufa) for hunting restocking
Outbreak 2 (003/2007) Santo Estev?o das Galés - Mafra, OESTE
Date of start of outbreak 21/12/2007
Outbreak status Resolved (22/12/2007)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 9527 0 9527 0
Affected population a farm with red-legged partridges (Alectoris rufa) for hunting restocking (9522 animals) and an annex including five pheasants
Outbreak 3 (004/2007) Santo Estev?o das Galés - Mafra, OESTE
Date of start of outbreak 31/12/2007
Outbreak status Continuing (or date resolved not submitted)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 16800 0 16800 0
Affected population a broiler farm 350 m far from the outbreak No. 003/2007
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 27315 0 27315 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible removed*
Birds 0.00% 0.00% - 100.00%
* Removed from the susceptible population either through death, destruction or slaughter

Epidemiology

Source of infection
  • Unknown or inconclusive
Epidemiological comments Tests were carried out in the partridge farms (outbreaks No. 002/2007 and 003/2007) within the framework of the nacional surveillance plan for avian influenza; tests in the chicken farm were part of the screening measures implemented following the outbreak No. 003/2007. There is no other poultry farm within a one-km radius from the outbreaks.

Note by the OIE Animal Health Information Department: H5 and H7 avian influenza in its low pathogenic form in poultry is a notifiable disease as per Chapter 2.7.12. on avian influenza of the Terrestrial Animal Health Code.

Control measures

Measures already applied
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Disinfection of infected premises/establishment(s)
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • None specified

Diagnostic test results

Laboratory name and type Laboratório Nacional de Investiga??o Veterinária (National laboratory)
Tests and results
Species Test Test date Result
Birds RT-PCR (amplification génomique en cha?ne avec polymérase - transcriptase inverse) 21/12/2007 Positive

Map of outbreak locations

Location of current outbreaks