Title: Highly pathogenic #avian #influenza #H7N9, #USA [N #American #lineage confirmed].
Subject: Avian Influenza, H7N9 subtype, poultry epizootics in the US.
Source: OIE, full page: (LINK).
Code: [ ]
Highly pathogenic avian influenza H7N9, United States of America
Information received on 08/03/2017 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
- Report type Follow-up report No. 1
- Date of start of the event 01/03/2017
- Date of confirmation of the event 04/03/2017
- Report date 08/03/2017
- Date submitted to OIE 08/03/2017
- Reason for notification Reoccurrence of a listed disease
- Date of previous occurrence 2016
- Manifestation of disease Clinical disease
- Causal agent Highly pathogenic avian influenza virus
- Serotype H7N9
- Nature of diagnosis Laboratory (advanced)
- This event pertains to a defined zone within the country
- Related reports Immediate notification (06/03/2017)
- Follow-up report No. 1 (08/03/2017)
- There are no new outbreaks in this report
- Source of the outbreak(s) or origin of infection
- Unknown or inconclusive
- Epidemiological comments
- The USDA Animal and Plant Health Inspection Service (APHIS), in conjunction with the Tennessee Department of Agriculture, are continuing to respond to the identification of a highly pathogenic avian influenza (HPAI) H7N9 of North American wild bird lineage based on full genome sequence analysis in a chicken broiler breeder flock.
- All eight gene segments of the virus are North American wild bird lineage.
- This is NOT the same as the China H7N9 lineage that has impacted poultry and infected humans in Asia.
- Although the subtypes are the same (H7N9) the virus detected in the United States is a very different virus, genetically distinct from the China H7N9 lineage.
- A comprehensive epidemiological investigation in the surrounding area is continuing and enhanced surveillance and testing has begun.
- The first round of testing of all commercial poultry premises in a 10 mile (16 kilometer) surveillance zone has been completed with all results negative for avian influenza virus.
- State officials have quarantined the affected premises and implemented movement controls.
- Depopulation of birds on the premises has been completed and disposal of the birds is near completion.
Keywords: OIE; Updates; Avian Influenza; H7N9 ; Poultry; USA; Tennessee.