OIE: Low pathogenic avian influenza (poultry), United States of America

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