Title: Low pathogenic #avian #influenza #H7N9, #USA [a #poultry #outbreak, Tennessee].
Subject: Avian Influenza, H7N9 subtype, poultry epizootics in the US.
Source: OIE, full page: (LINK).
Code: [ ]
Low pathogenic avian influenza (poultry) H7N9, United States of America
Information received on 10/03/2017 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 Immediate notification
- Date of start of the event 06/03/2017
- Date of confirmation of the event 08/03/2017
- Report date 10/03/2017
- Date submitted to OIE 10/03/2017
- Reason for notification Reoccurrence of a listed disease
- Date of previous occurrence 2017
- 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 (1)
- Outbreak 1 - Giles County, Giles, TENNESSEE
- Date of start of the outbreak 06/03/2017
- Outbreak status Continuing (or date resolved not provided)
- Epidemiological unit Farm
- Affected animals: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 16500 - … – 0 - 16500 - 0
- Affected population: Commercial grandparent stock primary broiler breeder flock.
- Summary of outbreaks
- Total outbreaks: 1
- Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 16500 - ** - 0 - 16500 - 0
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - ** - 0.00% - ** - 100.00%
- *Removed from the susceptible population through death, destruction and/or slaughter
- **Not calculated because of missing information
- Source of the outbreak(s) or origin of infection
- Unknown or inconclusive
- Epidemiological comments
- As part of routine, pre-slaughter testing and surveillance for H5/H7 Avian Influenza, low pathogenic avian influenza (LPAI) H7N9 of North American wild bird lineage was detected in healthy broiler breeder chickens.
- This is the first detection of H7N9 LPAI poultry in TN and also the first detection of LPAI H7N9 in commercial poultry in the United States in 2017.
- Although this is a low pathogenicity H7 strain, as a precautionary preventive measure, the flock was depopulated.
- The USDA Animal Plant Health Inspection Service (APHIS) and the Tennessee Department of Agriculture are conducting a comprehensive epidemiological investigation and have implemented enhanced surveillance and testing related to this event.
Keywords: OIE; Updates; Avian Influenza; H7N9 ; Poultry; USA; Tennessee.