Authorities in the United Kingdom (UK) have imposed strict movement controls on aquatic animals following the confirmation of a Koi herpesvirus (KHV) outbreak at a fish-growing facility in Aspley Guise, Milton Keynes.
The Fish Health Inspectorate (FHI) confirmed the outbreak at a facility at Tree Farm on September 10, prompting the introduction of statutory measures aimed at preventing the virus from spreading to other fish farms and waters.
KHV is a serious viral disease that affects common carp and ornamental carp, including koi. According to the UK Government, the disease can cause significant fish deaths, particularly when water temperatures are between 16°C and 28°C.
Affected fish may develop white or brown patches on their gills, damaged or rough skin, excessive loss of mucus and sunken eyes.
Despite the seriousness of the disease among fish, authorities stressed that KHV poses no risk to public health.
Under the restrictions, operators within the designated area cannot move aquatic animals, including live fish, eggs or gametes, into, out of or within the affected zone without written approval from the FHI.
The authorities have also ordered that dead aquatic animals and related biological material be disposed of through approved Category 2 animal-by-product waste procedures.
The FHI will monitor the affected facility and inspect compliance with the restrictions. Operators must also immediately report renewed fish deaths or evidence that the disease has spread to other facilities or bodies of water within the designated area.
Any proposed physical changes to affected sites, including alterations to boundaries, water bodies or their use, must also be reported to the inspectorate in advance.
The FHI said requests for necessary permissions must generally be submitted at least five working days before the proposed movement or activity.
Authorities said additional control measures could include enhanced biosecurity, movement restrictions, culling of infected fish, and thorough cleaning and disinfection of affected premises.
KHV outbreaks have been subject to statutory controls in the UK since 2007, with the country maintaining a surveillance programme for the disease.
The latest outbreak has prompted authorities to remind fish owners and aquaculture operators to strengthen biosecurity measures and report suspected cases promptly to help prevent further spread.
