Promising trials for new PCV vaccine
Scientists at Kansas University say that vaccination studies, aimed at creating a Porcine Circovirus-2 vaccine,
seem to look promising.
"It's too early to tell how effective this vaccine will
be, but the preliminary trials look good," said Lisa Tokach, an Abilene,
The studies are expected to be completed
in about a month. The scientists are not sure when a vaccine will be available
in sufficient amounts for producers to purchase.
According to Raymond Rowland, PhD, a virologist at Kansas
State, different strains of PVC2 have now been identified - one of them being
The research is the result of an intense collaboration
between pig producers, veterinarians and scientists across the USA - working
together to find a solution quickly.
The outbreaks, caused by Porcine
Circovirus-2, were first discovered in November 2005 and showing new cases
almost every week. Some producers are said to have lost about 20% of their
It is predicted
that every US pig herd is 'infected' with PCV Associated Disease (PCVAD),
however, not all herds are 'affected'.
Environmental conditions and
the presence of other pathogens or diseases may be contributing factors
explaining the difference between infected and affected herds.
depletes the lymph node system, leaving the pig with no defense against other
Kansas State received about
$70,000 in research grants from the National Pork Board and from agriculture
experiment station funding.
Symptoms of PCVAD include anorexia, rapid
weight loss, generally unhealthy pigs, skin discoloration or lesions,
respiratory problems and diarrhoea.
â€¢ Kansas State
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