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

OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Aug, 7, 2009 20:51 PM from OIE

Information received on 06/08/2009 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America

Summary

Report type	Immediate notification
Start date	26/07/2009
Date of first confirmation of the event	04/08/2009
Report date	06/08/2009
Date submitted to OIE	06/08/2009
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	07/2009
Manifestation of disease	Sub-clinical infection
Causal agent	Low pathogenic avian influenza virus
Serotype	H7N9
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 and Affected population

MINNESOTA (Meeker County, Meeker) : A commercial turkey operation with an estimated 160,000 birds in 16 houses. The birds are 12 to 13 weeks old.

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	160000	**	0	0	0

Outbreak statistics

Species	Apparent morbidity rate	Apparent mortality rate	Apparent case fatality rate	Proportion susceptible animals lost*
Birds	**	0.00%	**	0.00%

* 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

The Minnesota Board of Animal Health (BAH) placed a quarantine on the affected premises and implemented the H5/H7 LPAI State Response and Containment Plan.
- There are no signs of clinical illness or increased mortality in the flock
- Enhanced surveillance will be conducted on all flocks within a 5km (3 mile) radius and on all flocks epidemiologically linked to the affected premises.
-No virus has been isolated yet. Further laboratory testing is pending.

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 10.4. on avian influenza of the Terrestrial Animal Health Code (2008).

Control measures

Measures applied	Quarantine Zoning Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

National Veterinary Services Laboratory (NVSL) (National laboratory)

Tests and results

Species	Test	Test date	Result
Birds	real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)	04/08/2009	Positive

Future Reporting

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

See Also:

http://www.oie.int

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