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

OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Oct, 16, 2018 9:15 AM from OIE

Information received on 12/10/2018 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. 3
Date of start of the event	06/09/2018
Date of confirmation of the event	08/09/2018
Report date	12/10/2018
Date submitted to OIE	12/10/2018
Reason for notification	Recurrence of a listed disease
Date of previous occurrence	30/04/2018
Manifestation of disease	Clinical disease
Causal agent	Low pathogenic avian influenza virus
Serotype	H7N3
Nature of diagnosis	Laboratory (advanced)
This event pertains to	a defined zone within the country
Related reports	Immediate notification (12/09/2018) Follow-up report No. 1 (19/09/2018) Follow-up report No. 2 (25/09/2018) Follow-up report No. 3 (12/10/2018)

New outbreaks (1)

Outbreak 1

Stanislaus County, Stanislaus, California

Date of start of the outbreak

04/10/2018

Outbreak status

Continuing (or date resolved not provided)

Epidemiological unit

Farm

Affected animals

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	33400

Affected population

Commercial meat-type turkey flock

Summary of outbreaks

Total outbreaks: 1

Total animals affected

Species	Susceptible	Cases	Deaths	Killed and disposed of	Slaughtered
Birds	33400	**

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 the pre-slaughter testing and surveillance program for H5/H7 Avian Influenza, H7N3 low pathogenic avian influenza (LPAI) was detected in a commercial meat-type turkey flock. Partial HA /NA sequencing determined the H7 and N3 to be a low pathogenic virus of North American wild bird lineage. A comprehensive epidemiological investigation with enhanced surveillance is ongoing. State officials have quarantined the affected premises and implemented movement controls. Partial sequencing is consistent with LPAI North American wild bird lineage, and partial fragments of subsequent samples collected are 100% similar to index case. Further characterization is pending virus recovery.

Control measures

Measures applied	Movement control inside the country Surveillance outside containment and/or protection zone Surveillance within containment and/or protection zone Quarantine Zoning Vaccination permitted (if a vaccine exists) No treatment of affected animals
Measures to be applied	Stamping out Disinfection

Diagnostic test results

Laboratory name and type	Species	Test	Test date	Result
California Animal Health and Food Safety Laboratory (Local laboratory)	Birds	real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)	09/10/2018	Positive
National Veterinary Services Laboratory (National laboratory)	Birds	real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)	11/10/2018	Positive
National Veterinary Services Laboratory (National laboratory)	Birds	virus isolation		Pending

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.

See Also:

http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=28235

Latest news in those days:

[Go Top] [Close Window]