PMWS -Wisconsin on the trail
- From: "Pat Gardiner" <patgardiner@xxxxxxxxxxxxxx>
- Date: Wed, 13 Feb 2008 17:42:21 -0000
Pat's Note: Wow! How long have I been telling the world that PMWS mutated
into a more serious form here outside my door and was covered up by corrupt
British government vets, imposing a reign of terror to keep people quiet?
They then exported it in live pigs worldwide.
Even the Past President of the OIE complained about Britain failing to make
it a notifiable disease. The fact that Britain tried so hard to redate the
resulting epidemic to 2001 from 1999 fixes the culpability.
The Americans are coming. They only have to search the archives of this
newsgroup to find all the information they need.
They may be technically right, although I would not even be sure about that,
about the inference that there is no direct danger to human health, but the
indirect dangers are massive. Try MRSA for just one
http://www.wisconsinagconnection.com/story-national.php?Id=364&yr=2008
Combined Viruses Cause More Deadly Disease in Pigs
USAgNet - 02/13/2008
A pig virus that exists worldwide has become more dangerous as the virus has
mutated and then combined with other pathogens, according to Purdue
University researchers. It's not known why a virus that has been known to
infect swine for almost 40 years in North America in 1991 suddenly started
causing disease in young pigs and then began mutating into more deadly
forms. Evidence from research being conducted at the Indiana Animal Disease
Diagnostic Laboratory on the Purdue campus, has indicated that the most
recent mutation of a group of viruses called "porcine circoviruses," can
cause widespread acute disease. Other pathogens can combine with the virus
to increase the fatality rate significantly.
"Our goal is to help the hog industry by understanding porcine circoviruses
better," said Roman Pogranichniy, a Purdue School of Veterinary Medicine
virologist and a scientist with the lab.
In the ongoing study to determine how the mutated form of porcine circovirus
have studied pigs exposed to a virus combination. The viruses, PCV2 and
bovine viral diarrhea virus, came from pigs that had developed the diseases
on the farm.
"We think that the new co-factors, including bovine viral diarrhea
virus-like pathogen and other swine viruses, work together with porcine
circovirus to attack the animals¹ systems and become more virulent,"
Pogranichniy said.
Studying virus-caused lesions and blood of PCV2-infected pigs provided some
indications of how the virus enters the animals' cells, the scientists said.
This helps them understand the process that allows circovirus-related
diseases to progress and become more deadly.
"Results of the study also indicated that the amount of the PCV2 virus found
in the animals had a direct relationship to how sick the pigs became,"
Pogranichniy said. "There was a high correlation between the amount of PCV2
viral DNA in the lesions and the severity of the disease."
During the past decade porcine circoviruses have spread to almost every area
of the world where hogs are raised, but the mortality rate per herd is
usually low. On farms infected with other viruses in addition to the new
form of porcine circovirus disease, however, the mortality rate rose to 35
percent to 50 percent. Porcine circoviruses do not infect people.
Three commercial vaccines against PCV2 are available in the U.S. market. It
was reported that a recently developed vaccine against PCV2 will reduce
mortality, but testing on the newest porcine circovirus form is ongoing.
Scientists first identified one type of porcine circovirus in 1974 in
Europe. Further study showed that it had been present in pigs since at least
1969, but didn¹t cause apparent disease.
In 1991 a disease appeared in 6-11-week-old nursery-age pigs in which they
lost weight, developed lesions on their organs, and often had respiratory
problems, diarrhea and jaundice. The disease was called post-weaning
multi-systemic wasting syndrome.
--
Regards
Pat Gardiner
www.go-self-sufficient.com
.
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