KOI HERPESVIRUS DISEASE - UK: (ENGLAND)
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Date: Sat 16 Jun 2012
Source: Welwyn Hatfield Times [edited]
<http://tinyurl.com/cbbtbs8>
Deadly virus suspected of killing fish
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A deadly virus is suspected of killing a number of fish in the lake at Brocket Hall.
Shocked, a local person contacted the Welwyn Hatfield Times after his walk in the grounds of the Lemsford stately home on 1 Jun 2012 ended in upset, as he discovered "no less than 10 dead carp" floating lifeless among the lilies. The fish were sizable, at about a foot long each.
He said he had to avert his young daughter's gaze from the scene on the lake. He said: "I was shocked. My 3-year-old girl kept asking what those things in the water were. My wife and I had to divert her attention."
He added: "Not sure what could have caused such an event, but I know the River Lea feeds the lake, the staff had just been called to see them [the dead fish] by one of the members, so I suspect they must be recently dead."
It was revealed that staff at the site are dealing with a suspected outbreak of virulent koi herpes.
Kurt Schmid, general manager of Brocket Hall, said: "We are aware of the suspected case of Koi Herpes Virus (KHV) within the lake on the estate. "As this is a naturally occurring environmental circumstance, we are working with the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) and the Environment Agency to confirm this.
"We are keeping in regular contact with CEFAS to stay informed of this situation and will assist in any way possible to resolve it."
[Byline: Paul Christian]
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[Koi herpesvirus disease (KHVD) is caused by a herpesvirus capable of inducing a contagious and acute viraemia in common carp (_Cyprinus
carpio_) including carp ornamental varieties such as koi carp and ghost carp.
The disease is transmitted by fish to fish contact and it is also possible that the disease can spread through contaminated water, nets and other equipment. The virus is thought to be shed through faeces, and urine, and also possibly via gills and skin. KHVD may have the capacity to remain latent in its host for long periods of time before becoming active; stress is often the 'trigger' before an outbreak of the disease.
The disease was added to the OIE list in 2007.
PCR testing of archived samples in the UK confirmed that KHVD had been present there as early as 1996 (Denham, K. 2003. Koi herpesvirus in wild fish. Veterinary Record 153:507)
More information on KHVD is found in OIE Aquatic Manual chapter 2.3.6, which is available at:
<http://www.oie.int/fileadmin/Home/eng/Health_standards/aahm/2010/2.3.06_KHVD.pdf>.
- Mod.AS
A HealthMap/ProMED-mail map can be accessed at:
<http://healthmap.org/r/1fj0>.]
[see also:
Koi herpesvirus disease - Sweden: (VG) OIE 20120517.1135973 Koi herpesvirus disease - Italy: (VN), OIE 20120513.1131835
2011
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Koi herpesvirus disease - UK: (England) 20111027.3192 2010
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Koi herpesvirus disease - UK: (England) 20100828.3069
2009
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Koi herpesvirus disease - UK (02): (England) 20090918.3273 Koi herpesvirus disease - UK 20090814.2893
2008
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Koi herpesvirus disease - UK (02): (England) 20080926.3044 Koi herpesvirus disease - UK 20080908.2807
2007
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Koi herpesvirus disease - UK (02) 20071108.3630 Koi herpesvirus disease - UK 20070817.2688
2004
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Spring viremia & Koi herpesvirus, carp - UK 20040907.2497 Koi herpesvirus - United Kingdom 20040116.0177
2003
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Koi herpesvirus - worldwide: etiology 20030929.2450
2002
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Koi herpesvirus, carp - Indonesia: suspected, OIE 20020630.4639 ]] .................................................sb/arn/ejp/ml/ll
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