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WSWS : News
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: Britain
Britain's Foot and Mouth epidemic raises wider public health
concerns
By Paul Mitchell
1 May 2001
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The economic costs of the current foot and mouth disease (FMD)
epidemic on British farms are well known. Farming has been devastated
and tourism has plummeted, as some rural areas have become no-go
zones. But now there is widespread concern for public health and
the environment, as a result of the slaughter of millions of animals.
Pictures of mass burial sites, funeral pyres and animals lying
in fields for weeks have filled the newspapers and TV screens.
FMD is a highly contagious animal disease that has infected 1,515
livestock on 5,900 farms since it was first discovered on February
19 at an Essex abattoir. In some of the worst hit areas, such
as southern Scotland, over half the farms are directly affected.
The government's policy is to cull all animals on infected
premises within 24 hours and on neighbouring farms within 48 hours.
The result has been the slaughter or proposed slaughter of nearly
two and a half million sheep, cattle and pigs. Another million
or more are to be destroyed for welfare reasons.
The disease peaked at 43 outbreaks a day at the end of March
and now averages 12 a day. Until now it has mainly affected sheep
but there are fears it may increase again, as cattle are brought
onto spring pastures.
There are now concerns at the risk of FMD to humans. Although
rare and not threatening, it is possible for some people to contract
the disease. The symptoms are a milder form of the painful blisters
that appear around the mouth, nose and feet in animals. In the
current epidemic, public health officials have tested 13 people
suspected of catching the disease by touching animals or drinking
infected milk. Eight have so far proved negative.
It was several weeks into the epidemic before government departments
issued guidelines on the transport and disposal of animals once
they had been slaughtered. Officials hurriedly put together advice
on the disposal of disinfectants, manure, slurry and milk.
There are serious problems of contamination through footwear,
clothing, equipment and vehicles. The virus can be blown by the
wind and carried by birds and rodents for great distances. The
Environment Agency recommended farmers send dead animals to rendering
plants and incinerators. If this was not possible, the Agency
said they should be buried in registered landfills. Burning or
burying on farms was the least desirable option but, in practice,
nearly all disposals have been through this route so far. By March
20, at the height of the epidemic, only one rendering plant had
been chosen.
Potentially far more serious health problems than FMD itself
have been posed by the mass slaughter policy. Because of Bovine
Spongiform Encephalopathy (BSE) or Mad Cow Disease,
only cattle under the age of 30 months can be used for human consumption.
Older ones must be incinerated. BSE in cattle is responsible for
the development of the fatal brain wasting disease new variant
CJD in humans.
Dirk Hazell, head of the Environmental Services Association,
explained, Until the outbreak of foot and mouth disease,
cattle carcasses over 30 months old were being sent to prescribed
outlets (high temperature incineration). We are extremely concerned
as to the known resilience and potential toxicity of the BSE prion
[the mutated brain protein thought to be the transmission mechanism
for BSE]. The high risk associated with the prion means that much
greater caution must be exercised ... It was not considered safe
before the outbreak to landfill carcasses of cattle between 30
months and 60 months.
Agriculture minister Joyce Quin admitted that it was possible
small numbers of FMD cattle may be in the pre-clinical stage
of BSE and harbour some of the BSE agent. The government
suddenly ordered farmers to send cattle older than five years
for incineration. There have been last minute attempts to dig
huge landfill sites or construct open-air pyres. Kerosene has
been used to light pyres constructed of coal slag, old tyres and
tar-soaked rail sleepers. The resulting smell and smoke have provoked
angry local protests. In addition, open air pyres burn less efficiently
than industrial incinerators, producing toxic chemicals such as
dioxins. Unpublished official figures show pyres are causing more
pollution than all Britain's biggest factories.
A Department of Health report issued on April 24 claims there
is no risk from dioxin. However, it recognises that asthma sufferers
and those living close to pyres could be made ill by irritants
such as sulphur dioxide and particles. It recommends that pyres
should be situated two to three kilometres from local communities.
This response resulted from the experience at open-air pyres
like that at a disused airfield at Hallburn in Cumbria, the area
with the greatest number of FMD outbreaks. A half kilometre long
pyre was built, capable of burning 20,000 carcasses a week delivered
by hundreds of trucks from all over Northern England. For five
weeks a huge cloud of black smoke hung over the town of Longtown,
one kilometre away. Residents complained of illnesses and tar-like
resins covering their houses and gardens.
A similar pyre with ten rows of burning animals was lit on
April 22 outside the village of Holsworthy, Devon in south-west
England. The area still has the biggest backlog of unburied carcasses.
At one time there were nearly 200,000 lying dead in fields, many
waiting up to three weeks for disposal. The reason for this lies
in part with the Environment Agency, which has abandoned several
mass burial sites because of the threat of water pollution. Although
there is little threat from the FMD virus, chemicals and bacteria
from the rotting carcasses could pollute the water supply.
The Agency says that pollution is significant where aquifers
(water-bearing layers of rocks) are used for abstracting water
for public supply or food/drink processing. In Cumbria there
are 140 such public supplies, as well as the several thousand
private supplies where the water is usually untreated. Underground
sources, once polluted, are notoriously difficult to clean up,
hence the Agency normally require a one metre thick layer of clay
in registered landfill sites. This is the case at the Ash Moor
landfill site in Devon, where enormous burial pits lined with
clay are being constructed for 432,000 carcasses. But it will
not be ready for two more weeks.
There are no such requirements for smaller burial sites. On
the Epynt military range in Wales, where 15,000 sheep were buried
in a trench with no lining, there was evidence of blood and other
body fluids in nearby monitoring boreholes five days later. There
were reports of streams turning white, probably from the lime
used to cover the carcasses. Two of the cleanest salmon rivers
in Britain, the Usk and Towy were threatened. The Welsh Assembly
has now ordered the sheep to be dug up.
There have been similar reports of blood seeping from the on-site
burial of 1,500 sheep at Buttington Hall farm in mid Wales.
The course of the epidemic has proved that successive governments
have ignored the lessons of Britain's last FMD epidemic in 1967
and more recent warnings that Europe was at high risk from the
disease re-emerging. The current epidemic is a new strain of the
virus known as type O Pan-Asia. It was first identified in 1990
in northern India and spread slowly towards Europe and South East
Asia, appearing in several countries previously unaffected such
as Japan and South Korea.
A report into the swine fever epidemic in the Netherlands in
1997, a year after Prime Minister Blair's Labour government came
to power, detailed the growing risk of animal epidemics. It recommended
increased tracking and testing of animals. These procedures would
have been vital today, as many sheep infected by this type of
FMD either do not show symptoms or do so only briefly. Incubation
can take between two and 21 days, during which time the disease
can have spread.
Besides ignoring the Dutch recommendations, the government
has cut veterinary services. The crisis has found the government
completely unprepared and making policy zigzags at every major
turn in face of pressure from competing economic interest groups.
It promised a decision on whether or not to use vaccination within
48 hours on March 29, but has still not done so because farming
interests say it will take longer for Britain to regain the disease
free status needed for export.
See Also:
Britain: Supermarket profits boom while
food poverty increases
[23 April 2001]
Britain: Foot and mouth disease
"an epidemic waiting to happen"
[23 March 2001]
Europe's foot and mouth disease
outbreak was foreseeable and preventable
[8 March 2001]
BSE / CJD
& Food Safety Issues
[WSWS Full Coverage]
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