Fourth bluetongue case confirmed
September 26th, 2007There were fresh fears today that the potentially devastating bluetongue disease was spreading after a fourth case was confirmed.
The virus, often spread by midges, was found in a cow in a farm near Ipswich in Suffolk - close to a farm where the first two cases were discovered. The cow will now be culled. A third case was confirmed yesterday, about 40 miles away, near Lowestoft.
The environment department, Defra, said it was still too soon to say whether there was an outbreak of the disease, which has never previously been found in the UK.
“Cases in single animals don’t constitute an outbreak,” a spokeswoman said.
“We need to determine whether it’s circulating in the midge population.”
Bluetongue, which has been present in northern Europe, may have come to the UK on midges blown across the Channel.
An outbreak, which would trigger new movement restrictions in several counties that have just seen them relaxed after foot and mouth, requires transmission between two native animals.
Plans to restore farm-to-farm movements in Norfolk and Suffolk yesterday were scrapped following the new bluetongue case. Surveillance for bluetongue was yesterday extended to animals in Suffolk, Norfolk, Northamptonshire, Cambridgeshire, Leicestershire, Nottinghamshire and Lincolnshire.
The disease is spread by infected midges to ruminant animals, such as cows and sheep, but unlike the highly contagious foot and mouth, it cannot spread directly from animal to animal.
Bluetongue, common in the Mediterranean, is difficult to control and has swept across much of northern Europe since its arrival last summer. There is not yet a vaccine against the strain type found in Britain, which experts have confirmed is the same as the disease circulating in northern Europe.
The virus can only be carried by a very small number of midge species. Scientists investigating 3,000 cases across France, Germany and surrounding countries last year identified only a single insect carrying the disease. Meanwhile, restrictions on animal movements across much of the rest of the UK were eased yesterday, as another suspected case of foot and mouth disease in Hampshire was declared a false alarm.
Defra said initial tests showed livestock on a premises near Rogate, West Sussex, did not have the disease, and that the temporary control zone had been lifted. The all-clear means the disease has not been found outside Surrey since the outbreak began in August. The risk of foot and mouth spreading throughout the country is now considered low.

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