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

OIE: Low pathogenic avian influenza (poultry), United States of America
submited by kickingbird at Mar, 30, 2011 19:53 PM from OIE

Information received on 30/03/2011 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	25/03/2011
Date of first confirmation of the event	25/03/2011
Report date	29/03/2011
Date submitted to OIE	30/03/2011
Reason for notification	Reoccurrence of a listed disease
Date of previous occurrence	15/12/2009
Manifestation of disease	Sub-clinical infection
Causal agent	Low pathogenic avian influenza virus
Serotype	H7N3
Nature of diagnosis	Laboratory (advanced)
This event pertains to	a defined zone within the country

New outbreaks

Summary of outbreaks

Total outbreaks: 1

Location(s)

MISSOURI (Polk County, Missouri, Polk County)

Total animals affected

Species	Susceptible	Cases	Deaths	Destroyed	Slaughtered
Birds	30000	**

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

-Samples were collected as part of routine, pre-slaughter surveillance for the National Poultry Improvement Plan (NPIP) Avian Influenza Clean Program (H5 and H7).
-The turkeys did not show any clinical signs of sickness or disease.
-The Missouri H5/H7 LPAI Initial State Response and Containment plan has been implemented.

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 (2010).

Control measures

Measures applied	Quarantine Movement control inside the country Vaccination prohibited No treatment of affected animals
Measures to be applied	No other measures

Diagnostic test results

Laboratory name and type

Missouri Department of Agriculture (Local laboratory)

Tests and results

Species	Test	Test date	Result
Birds	agar-gel immunodiffusion (AGID)	25/03/2011	Positive

Laboratory name and type

National Veterinary Services Laboratories (National laboratory)

Tests and results

Species	Test	Test date	Result
Birds	agar-gel immunodiffusion (AGID)	28/03/2011	Positive
Birds	neuraminidase inhibition assay	28/03/2011	Positive
Birds	real-time PCR	28/03/2011	Positive
Birds	real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)	28/03/2011	Positive
Birds	virus isolation		Pending

Future Reporting

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

See Also:

http://www.oie.int

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