OIE: AVIAN INFLUENZA IN SWEDEN

OIE: AVIAN INFLUENZA IN SWEDEN
submited by kickingbird at Mar, 22, 2006 7:12 AM from OIE

AVIAN INFLUENZA IN SWEDEN

(Disease never reported before in Sweden).

Information received on 20 March 2006 from Dr Leif Denneberg, Chief Veterinary Officer, Swedish Board of Agriculture, J?nk?ping:

Report date: 20 March 2006.

Reason for immediate notification: first occurrence of a listed disease or infection in a country or zone/compartment.

Identification of agent: highly pathogenic avian influenza (HPAI) virus subtype H5.

Date of first confirmation of the event: 17 March 2006.

Date of start of the event: 24 February 2006.

Clinical disease: no.

Nature of diagnosis: laboratory.

Location of outbreak: G?sshult, Oskarshamn municipality, Kalmar County (County No. 8).

Number of animals in the outbreak

susceptible : 692.

cases: 1.

destroyed: 692.

Description of affected population: in a holding (fenced area) which included game birds (500 farmed mallards [Anas platyrhynchos]), 150 pheasants, 30 pigeons, 10 backyard hens and 2 peafowls, 50 samples were taken from mallards and pheasants. HPAI virus subtype H5 was found in one mallard.

Laboratory where diagnostic tests were performed: National Veterinary Institute, Uppsala.

Diagnostic tests used: PCR⁽¹⁾ and molecular sequencing.

Source of outbreak or origin of infection: contact with wild birds.

Control measures undertaken:

- control of wildlife reservoirs;

- stamping out;

- movement control inside the country;

- screening;

- zoning;

- disinfection of infected premises/establishment(s).

Other details/comments:

- There is no commercial poultry in the area.

- The holding was placed under supervision on 24 March 2006, since it is located within the surveillance zone already implemented due to findings in wild birds.

- All birds were clinically healthy at the time of sampling and there is no high mortality among wild birds noted in the area either.

- Samples were sent to OIE Reference Laboratory for avian influenza, Veterinary Laboratories Agency (VLA), Weybridge, United Kingdom, for confirmation.

(1) PCR: polymerase chain reaction

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