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2019-7-24 5:13:38


OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Apr, 25, 2019 9:28 AM from OIE

Information received on 24/04/2019 from Dr Jack Shere, Deputy Administrator Chief Veterinary Office r, USDA-APHISVeterinary Services, USA United States Department of Agriculture, WASHINGTON, United States of America

Summary

Report type

Immediate notification

Date of start of the event

15/04/2019

Date of confirmation of the event

20/04/2019

Report date

24/04/2019

Date submitted to OIE

24/04/2019

Reason for notification

Recurrence of a listed disease

Date of previous occurrence

2018

Manifestation of disease

Sub-clinical infection

Causal agent

Low pathogenic avian influenza virus

Serotype

H5

Nature of diagnosis

Laboratory (advanced)

This event pertains to

a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Outbreak Location

  • California ( Monterey County, Monterey )

Total animals affected

Species

Susceptible

Cases

Deaths

Killed and disposed of

Slaughtered

Birds

9476

**

Outbreak statistics

Species

Apparent morbidity rate

Apparent mortality rate

Apparent case fatality rate

Proportion susceptible animals lost*

Birds

**

**

**

**


* 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

  • Unknown or inconclusive

Epidemiological comments

As part of routine surveillance for H5/H7 Avian Influenza, H5 low pathogenic avian influenza (LPAI) was detected in a commercial duck breeder flock. Partial HA sequencing determined the H5 to be a LPAI virus of North American wild bird lineage. Further characterization is pending virus recovery. There have been no clinical signs of illness or increased mortality on the premises.

The USDA Animal Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) are conducting a comprehensive epidemiological investigation and have implemented enhanced surveillance and testing related to this finding. Two additional commercial poultry premises associated with the initial premises have been quarantined and sampled for avian influenza virus. Results are pending.

Control measures

Measures applied

  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Zoning
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals

Measures to be applied

  • Disinfection

Diagnostic test results

Laboratory name and type

California Animal Health & Food Safety Laboratory ( Local laboratory )

Tests and results

Species

Test

Test date

Result

Birds

real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)

19/04/2019

Positive

Laboratory name and type

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