A Texas man died last month from Variant
Creutzfeldt-Jakob Disease, the deadly human prion disease with causal links to
mad cow disease.
by John
Tyburski
Copyright © Daily
Digest News, KPR Media, LLC. All rights reserved.
The U.S.
Centers for Disease Control and Prevention announced earlier this week that
a Texas man died last month from Variant Creutzfeldt-Jakob Disease (vCJD),
bringing the total number of deaths from vCJD to four since the disease
was first characterized in the United Kingdom in 1996. The confirmation of vCJD
was made by laboratory testing of the man’s brain collected during autopsy. An
investigation into how the man may have contracted the disease is still
ongoing.
Variant CJD
is a rare, degenerative and fatal brain disease in humans that is thought to be
caused by the consumption of beef positive for bovine spongiform
encephalopathy (BSE), more commonly known as mad cow disease. The two diseases
are caused by prions, which are misfolded proteins that accumulate and kill
brain cells. The symptoms of vCJD include prominent psychiatric and behavior
issues and dementia. There is no known cure, and the disease is always fatal.
More than
220 vCJD cases have been reported worldwide, with 177 of these cases documented
in the U.K. There have been 27 cases in France. In each of the three previous
U.S. cases, infection occurred overseas with two in the U.K. and one in Saudi
Arabia. The most recent patient traveled extensively in Europe and the Middle
East and is thought to have contracted the disease overseas.
“There is no
evidence to suggest that other people in the United States have been exposed to
variant CJD because of this patient,” said CDC spokeswoman Christine Pearson.
In addition
to the variant form, a sporadic form of CJD is described. Sporadic CJD is not
linked to mad cow disease; its precise cause is not known. Sporadic CJD is
also fatal, and the symptoms differ slightly from those of vCJD and
they come on very rapidly. Each year, approximately one or two per million
people develop sporadic CJD.
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