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A Highly Pathogenic #Avian #H7N9 #Influenza Virus Isolated from A #Human Is Lethal in Some #Ferrets Infected via #Respiratory #Droplets (Cell Host Microbe, abstract)

Title : A Highly Pathogenic #Avian #H7N9 #Influenza Virus Isolated from A #Human Is Lethal in Some #Ferrets Infected via #Respiratory #Drop...

24 Mar 2017

Low pathogenic #avian #influenza #H7N9, #USA [three #poultry #outbreaks] (#OIE, Mar. 24 ‘17)

Title: Low pathogenic #avian #influenza #H7N9, #USA [three #poultry #outbreaks].

Subject: Avian Influenza, H7N9 subtype, poultry epizootics in USA.

Source: OIE, full page: (LINK).

Code: [     ]


Low pathogenic avian influenza (poultry) H7N9, United States of America

Information received on 24/03/2017 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

  • Summary
    • Report type    Follow-up report No. 1
    • Date of start of the event    06/03/2017
    • Date of confirmation of the event    08/03/2017
    • Report date    24/03/2017
    • Date submitted to OIE    24/03/2017
    • 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
  • Summary of outbreaks   
    • Total outbreaks: 3
      • Total animals affected: Species    - Susceptible    - Cases    - Deaths    - Destroyed    - Slaughtered
        • Birds    - 65931    - **    - 0    - 41931    - 0
      • Outbreak statistics: Species    - Apparent morbidity rate    - Apparent mortality rate    - Apparent case fatality rate    - Proportion susceptible animals lost*
        • Birds    - **    - 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   
    • As part of routine 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.
    • Although this is a low pathogenicity H7 strain, as a precautionary preventive measure, flocks are being depopulated.
    • The USDA Animal Plant Health Inspection Service (APHIS) and State Departments of Agriculture are conducting comprehensive epidemiological investigations and have implemented enhanced surveillance and testing related to the event.




Keywords: OIE; Updates; Avian Influenza; H7N9 ; Poultry; USA.