Title: Highly pathogenic #influenza A viruses #H5N2, #USA [infected #wildbirds].
Subject: Avian Influenza, H5N2 subtype, wild birds epizootic in Montana, USA.
Source: OIE, full page: (LINK).
Code: [ ]
Highly pathogenic influenza A viruses (infection with) (non-poultry and wild birds) H5N2, United States of America
Information received on 09/01/2017 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 27/12/2016
- Date of confirmation of the event 09/01/2017
- Report date 09/01/2017
- Date submitted to OIE 10/01/2017
- Reason for notification Reoccurrence of a listed disease
- Date of previous occurrence 10/11/2016
- Manifestation of disease Sub-clinical infection
- Causal agent Highly pathogenic influenza A virus
- Serotype H5N2
- 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 - MONTANA ( Fergus County, Fergus )
- Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
- Mallard:Anatidae (Anas platyrhynchos) - ** - … – … – … – …
- Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Mallard:Anatidae (Anas platyrhynchos) – ** – ** – ** – **
- * 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
- Contact with wild species
- Epidemiological comments
- The sample, from a wild mallard duck, was collected on 27 December 2016 as part of the hunter – harvested wild bird avian influenza surveillance program.
- Genome sequencing results show that the Montana isolate is an Eurasian/American (EA/AM) H5N2 HPAI strain.
- The partial genome fragments that have been analyzed thus far are >99% similar to the virus isolated from a northern pintail duck in Washington State in December 2014.
- The H5N2 outbreak viruses from 2015 were all >99% similar to the northern pintail index case (A/Northern pintail/Washington/40964/2014 H5N2). Efforts
- to obtain sequence data for the full genome are underway.
- This detection of HPAI (EA/AM) H5N2 virus in a wild bird is NOT associated with any commercial poultry in the United States.
Keywords: OIE; Updates; H5N2; Avian Influenza; Wild Birds; Montana; USA.