SPRING VIRAEMIA OF CARP IN THE UNITED STATES OF AMERICA
Follow-up report No. 1
See also: 11 June 2004
Information received on 14 July 2004 from Dr Peter Fernandez, Associate Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture (USDA), Washington, DC:
End of previous report period: 10 June 2004 (see Disease Information , 17 , 156, dated 11 June 2004).
End of this report period: 14 July 2004.
Location: State of Missouri, Pike County (in the central part of the country). No. of outbreaks: 1
Description of affected population in the new outbreak: the farm consists of six concrete raceways and thirteen earthen ponds. The diseased koi carp were being held in the concrete raceways. Bait fish, game fish and ornamental koi carp are present in the earthen ponds.
Total number of animals in the new outbreak: species: pis; susceptible: 500; cases:
; deaths: approx. 70%; destroyed:
A. Laboratory where diagnosis was made: University of Arkansas at Pine Bluff, National Veterinary Services Laboratories (NVSL).
B. Diagnostic tests used: cell culture; polymerase chain reaction (PCR).
Epidemiology: the outbreak is associated with a new introduction of ornamental koi carp from Minnesota (in the northern part of the country). Koi carp were shipped from Minnesota to the farm in Missouri using a live hauler. Within two weeks of arrival at the farm in Missouri, the koi carp, which were not eating well, began to die. Investigations are currently under way.
- stamping out;
- both the farm in Missouri and the farm in Minnesota are quarantined.