-

nihao guest [ sign in / register ]
2024-3-28 17:14:38


OIE: Highly pathogenic avian influenza ,United States of America(H5N2)
submited by kickingbird at Aug, 30, 2016 7:45 AM from OIE

Information received on 26/08/2016 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

Immediate notification

Date of start of the event

12/08/2016

Date of confirmation of the event

25/08/2016

Report date

26/08/2016

Date submitted to OIE

26/08/2016

Reason for notification

Reoccurrence of a listed disease

Date of previous occurrence

24/03/2016

Manifestation of disease

Sub-clinical infection

Causal agent

Highly pathogenic avian influenza 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

  • ALASKA ( Fairbanks North Star Borough, Fairbanks North Star Borough )

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;

Epidemiology

Source of the outbreak(s) or origin of infection

  • Contact with wild species

Epidemiological comments

The sample, from a wild mallard duck, was collected during a live bird banding program at a wildlife refuge in Alaska.
Genome sequencing results show that the Alaska 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 is the first detection of HPAI in a wild bird this year. This detection of HPAI (EA/AM) H5N2 virus in a wild bird is NOT associated with any commercial poultry in the United States.

Control measures

Measures applied

  • Vaccination prohibited
  • No treatment of affected animals

Measures to be applied

  • No other measures

Diagnostic test results

Laboratory name and type

National Veterinary Services Laboratories (NVSL) ( National laboratory )

Tests and results

Species

Test

Test date

Result

Mallard

gene sequencing

25/08/2016

Positive

Mallard

real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)

25/08/2016

Positive

Future Reporting

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

See Also: Latest news in those days:

[Go Top]    [Close Window]

Related Pages:
Learn about the flu news, articles, events and more
Subscribe to the weekly F.I.C newsletter!


  

Site map  |   Contact us  |  Term of use  |  FAQs |  粤ICP备10094839号-1
Copyright ©www.flu.org.cn. 2004-2024. All Rights Reserved. Powered by FIC 4.0.1
  Email:webmaster@flu.org.cn