For now Ohio’s deer herd appears clean of any chronic
wasting disease.
Again, for now at least, Ohio officials are saying.
In an annual cooperative venture between the Ohio departments
of Agriculture and Natural Resources, officials with both agencies are saying
that routine testing of largely – though not exclusively - road-kill white-tail
deer has failed to indicate the presence of Chronic Wasting Disease, or CWD, in
Ohio.
CWD is a degenerative disease of the brain caused by malfunctioning
proteins, called prions. The disease is always fatal and this particular form
of a tongue-twisting so-named Transmissible Spongiform Encephalopathy (TSEs) ailment
strikes white-tail and mule deer along with elk.
Other variations impact other mammal species, including humans.
However, no evidence exists that CWD can be transferred to humans even by
eating an infected animal.
A November 2004 scientific report compiled by officials with
the Centers for Disease Control on the subject drew the following conclusion:
“The lack of evidence of a link between CWD transmission and
unusual cases of CJD, despite several epidemiologic investigations, and the
absence of an increase in CJD incidence in Colorado and Wyoming suggest that
the risk, if any, of transmission of CWD to humans is low
“Although the in vitro studies indicating inefficient
conversion of human prion protein by CWD-associated prions raise the
possibility of low-level transmission of CWD to humans, no human cases of prion
disease with strong evidence of a link with CWD have been identified.
“However, the transmission of (CWD) indicate that, provided
sufficient exposure, the species barrier may not completely protect humans from
animal prion diseases.”
Consequently, the potential health concerns remain along
with worries as to whether CWD might pose a serious threat to the stability of
Ohio’s deer herd.
Not lost either is potential risk that the mere reporting of
CWD-infected animals might have on local hunting-based tourism. In some states,
hunters have stopped chasing deer due to fears of CWD being found in a
particular state’s deer herd.
Both federal and state wildlife and agricultural officials
with both state and federal various agencies went to work from September of
last year to April collecting road-kill deer. Samples from 753 animals were
assembled.
Also, another 88 hunter-harvested bucks and an additional
nine deer collected elsewhere were sampled. These deer displayed symptoms
similar to those symptoms addressed by CWD infection, the ODNR and ODA both say.
Yet all of the samples taken were demonstrated as being CWD
free. Thus such intensive sampling over 12 consecutive years has shown Ohio
deer as being free of the CWD disease.
Even so, the absence of CWD in the tested samples is not
proof positive that somewhere in Ohio there is lurking an infected deer or even
a small group of infected deer.
Still, the ODNR’s Division of Wildlife says Ohio is so densely
populated that someone somewhere would take note of a CWD-sick deer.
Presently 22 states and two Canadian provinces have recorded
CWD infection. Among them include a number of Ohio neighboring states including
West Virginia, Pennsylvania, and Michigan along with such nearby states as New
York, Illinois, and Virginia.
In the end, health and wildlife officials all agree that
hunters are on the front line on both detection and personal protection.
To this end deer hunters are urged to take proper and
appropriate action to prevent contamination, regardless of how insignificant
such a risk exists.
These precautions include wearing synthetic gloves while field-dressing
and butchering a deer, avoid eating meat from a sickly looking deer or elk
minimize handing or touching brain and related nervous system parts, bone out
the meat, along with eating deer and elk tissues known to harbor the CWD agent
(e.g., brain, spinal cord, eyes, spleen, tonsils, lymph nodes) from areas where
CWD has been identified.
For further information, visit the Agriculture Department’s
web site at www.ohioagriculture.gov
, the ODNR’s web site at www.wildohio.gov,
or the Chronic Wasting Disease Alliance at cwd-info.org.
- Jeffrey L. Frischkorn
JFrischk@Ameritech.net
Jeff Frischkorn is a retired News-Herald's reporter who covered the earth sciences, the area's three county park districts, as well as the outdoors for nearly 30 years. He continues covering the latter through this blog. Jeff also writes a column and feature stories for the Ohio Outdoor News, which is published every other week and concerns itself with matters associated with Ohio's varied outdoors scene.
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