Abstract

Infectious haematopoietic necrosis in the Czech (Republic~)

OIE
OIE Disease Information (on-line)
19
45
2006
INFECTIOUS HAEMATOPOIETIC NECROSIS IN THE CZECH (REPUBLIC ~)
( Date of previous outbreak of infectious haematopoietic necrosis in the Czech Republic reported to the OIE: 2003).

Immediate notification report

Information received on 7 November 2006 from Dr Josef Vitásek, Head of the Division of Animal Health and Welfare, State Veterinary Administration, Prague:

Report date:
2 November 2006.

Reason for immediate notification:
re-occurrence of an OIE listed disease in a zone of the country.

Identification of agent:
infectious haematopoietic necrosis virus.

Date of first confirmation of the event:
27 October 2006.

Date of start of the event:
16 October 2006.

Clinical disease:
yes.

Nature of diagnosis:
clinical and laboratory.

Details of outbreak:
First administrative division
(province): Jihocesky; Lower administrative division (district ): Cesky Krumlov; Type of epide-miolo-gical unit: farm; Name of the location: Mostky; Date of start of the outbreak: 16 Oct. 2006; Species: pis; Morbidity: 4%; Mortality: 1%;
Number of animals in the outbreak (in kg): susceptible: 25,000; cases: 900; deaths: 250; destroyed: … slaughtered:

Description of affected population: freshwater rainbow trout( Oncorhynchus mykiss )in a semi-closed production system.

Diagnosis:

Laboratory where diagnostic tests were performed:
Veterinary Research Institute, Brno; Species examined: pis; Diagnostic tests used: PCR(1);; Date: 27 Oct. 2006; Result: positive

Source of outbreak or origin of infection: unknown or inconclusive.

Control measures

A. Undertaken:

- tracing forward;
- tracing back;
- surveillance outside containment and/or buffer zone;
- decontamination of premises/disinfection;
- within-country movement controls.

B. To be undertaken:

- surveillance within containment and/or buffer zone;
- official destruction of clinically diseased aquatic animals;
- official destruction of aquatic animal products;
- official disposal of carcasses, by-products and waste.

Treatment of affected animals:
no.

Vaccination prohibited:
no.

Final report:
no.
(1) PCR: polymerase chain reaction
OIE