OIE:HIGHLY PATHOGENIC AVIAN INFLUENZA IN CAMBODIA Follow-up report No. 4

Information received on 1 April 2005 from Dr Sen Sovann, Deputy Director, Department of Animal Health and Production (DAHP), Phnom Penh:

End of previous report period: 22 September 2004 (see Disease Information, 17 [39], 280, dated 24 September 2004).

End of this report period: 28 March 2005.

Precise identification of agent : avian influenza A virus subtype H5N1.

Nature of diagnosis: clinical and laboratory.

Details of new outbreaks:

First administrative division Lower administrative division Type of epide-miolo-gical unit Name of the location Date of start of the outbreak Spe-cies Number of animals in the outbreak
susceptible cases deaths destroyed slaugh-tered
Kandal province Takmao district ... Kro Peuha 2 Feb. 2005 avi 105 70 70 35 0
Kompot province Banteay Meas district ... Kia Thavong Leu 24 Mar. 2005 avi 28 19 19 9 0

Description of affected population in the new outbreaks: backyard chickens.

Diagnosis:

Laboratories where diagnosis was made Diagnostic tests used Date Results

National Animal Health and Production Investigation Center (NAHPIC)

Pasteur Institute, Cambodia

RT-PCR (reverse transcriptase - polymerase chain reaction)

4 February 2005

25 March 2005

positive

Source of new outbreaks: unknown; under investigation.

Control measures:

- stamping out and disinfection;

- control of animal movement in the affected areas.