Wisconsin First CWD-positive wild deer detected in Portage and Juneau Counties
Posted Jan 02 2013 5:33pm
First CWD-positive wild deer detected in Portage and Juneau Counties
News Release Published: January 2, 2013 by the Central Office
Contact(s): Kris Belling, regional wildlife program manager, 715-839-3736; Ed Culhane, regional public affairs manager, 715-839-3715; Jennifer Pelej, public affairs manager, 608-264-9248
MADISON - Two deer have tested positive for chronic wasting disease, one each in Portage and Juneau Counties, reports the state Department of Natural Resources. These are the first positives in wild deer populations for both counties.
“Any CWD positive in a new county is noteworthy, but neither of these positives was completely unexpected,” said Kris Belling, DNR regional wildlife program manager. “We’ve been performing surveillance in Juneau County due to the proximity of the CWD management zone boundary and we’ve been sampling in Portage County for 10 years after positives were discovered on a former game farm.”
The two CWD-positive deer were harvested by gun hunters on Nov. 18 and sampled by DNR staff. The Portage County positive was a 1.5-year-old doe, harvested in deer management unit (DMU) 57A, close to the Mead Wildlife Area. The central Juneau County deer was a 4-to 5-year-old buck, harvested in deer management unit DMU 54B, less than two miles from the CWD management zone boundary.
These sampling results do not change the remaining days of the late archery hunting season nor does it change the current CWD management zone boundary. Baiting and feeding of deer, as well as deer rehabilitation, is already banned in these counties.
DNR has conducted annual surveillance in Portage County since 2002, when a captive game farm in the southeast part of the county experienced CWD positives in its herd. The disease was confirmed in a second captive herd in northwest Portage County in 2008. Since 2002, 1,506 wild deer have been tested.
Juneau County was part of DNR’s “weighted” surveillance strategy, focusing on older bucks because they have a higher probability of being infected with disease. The weighted approach increases the likelihood of early detection in periphery areas outside the CWD management zone.
“We thank all hunters who have brought deer in for voluntary CWD testing,” said Belling. “This cooperation is essential for detecting and tracking the prevalence of this disease.”
Sampling of deer in Juneau and Portage Counties is voluntary and will continue through the end of the late archery hunt, Jan. 6. Juneau County area bow hunters interested in having their deer sampled are encouraged to contact Jon Robaidek, local DNR biologist at 608-339-4819. Portage County area bow hunters can contact the Mead Wildlife Area office for more information on having their deer sampled, 715-457-6771.
“It is too soon to draw any conclusions from these most recent positives,” said Belling. “We will process remaining samples from these counties and discuss next steps once all results are in. We will keep the public informed and involved as we learn more.”
For more information on CWD in Wisconsin, and to view CWD maps, please visit dnr.wi.gov and search for “CWD.”
There were 26 reported escape incidents so far this year, this amounted to 20 actual confirmed escape incidents because 3 were previously reported, 2 were confirmed as wild deer, and 1 incident was not confirmed. ...
C. & D. Captive Cervid and Law Enforcement Update (11:10 AM)- Warden Pete Dunn gave the captive cervid farm update. There were 26 reported escape incidents so far this year, this amounted to 20 actual confirmed escape incidents because 3 were previously reported, 2 were confirmed as wild deer, and 1 incident was not confirmed. Approximately 30% of these escapes were caused by gates being left open and the other 70% resulted from bad fencing or fence related issues. The 20 actual confirmed escape incidents amounted to 77 total animals. 50 of the escaped animals were recovered or killed and 27 were not recovered and remain unaccounted for. Last year the CWD Committee passed a resolution to require double gates, but this has not gone into effect yet. Questions were raised by the committee about double fencing requirements? Pete responded that double fencing has not been practical or accepted by the industry. The DNR has the authority to do fence inspections. ?If a fence fails to pass the inspection the fencing certificate can be revoked and the farmer can be issued a citation. This year three citations and one warning have been issued for escapes.
Pete reviewed the reporting requirements for escape incidents that these must be reported within 24 hours. The farmer then has 72 hours to recover the animals or else it will affect the farm’s herd status and ability to move animals. Davin proposed in the 15 year CWD Plan that the DNR take total control and regulatory authority over all deer farm fencing. Larry Gohlke asked Pete about the reliability for reporting escapes? Pete said that the majority of escapes were reported by the farmer, but it is very difficult to determine when an escape actually occurred. Pete said that they are more concerned that an escape is reported and not that it is reported at the exact time that it happened.
THE states are going to have to regulate how many farms that are allowed, or every state in the USA will wind up being just one big private fenced in game farm. kind of like they did with the shrimping industry in the bays, when there got to be too many shrimp boats, you stop issuing permits, and then lower the exist number of permits, by not renewing them, due to reduced permits issued.
how many states have $465,000., and can quarantine and purchase there from, each cwd said infected farm, but how many states can afford this for all the cwd infected cervid game ranch type farms ??
11,000 game farms X $465,000., do all these game farms have insurance to pay for this risk of infected the wild cervid herds, in each state ??
The CWD infection rate was nearly 80%, the highest ever in a North American captive herd.
RECOMMENDATION: That the Board approve the purchase of 80 acres of land for $465,000 for the Statewide Wildlife Habitat Program in Portage County and approve the restrictions on public use of the site.
Form 1100-001 (R 2/11) NATURAL RESOURCES BOARD AGENDA ITEM
SUBJECT: Information Item: Almond Deer Farm Update
FOR: DECEMBER 2011 BOARD MEETING TUESDAY TO BE PRESENTED BY TITLE: Tami Ryan, Wildlife Health Section Chief
Samuel E. Saunders1, Shannon L. Bartelt-Hunt, and Jason C. Bartz
Author affiliations: University of Nebraska-Lincoln, Omaha, Nebraska, USA (S.E. Saunders, S.L. Bartelt-Hunt); Creighton University, Omaha (J.C. Bartz)
Occurrence, Transmission, and Zoonotic Potential of Chronic Wasting Disease
Most epidemiologic studies and experimental work have suggested that the potential for CWD transmission to humans is low, and such transmission has not been documented through ongoing surveillance (2,3). In vitro prion replication assays report a relatively low efficiency of CWD PrPSc-directed conversion of human PrPc to PrPSc (30), and transgenic mice overexpressing human PrPc are resistant to CWD infection (31); these findings indicate low zoonotic potential. However, squirrel monkeys are susceptible to CWD by intracerebral and oral inoculation (32). Cynomolgus macaques, which are evolutionarily closer to humans than squirrel monkeys, are resistant to CWD infection (32). Regardless, the finding that a primate is orally susceptible to CWD is of concern...
Reasons for Caution There are several reasons for caution with respect to zoonotic and interspecies CWD transmission. First, there is strong evidence that distinct CWD strains exist (36). Prion strains are distinguished by varied incubation periods, clinical symptoms, PrPSc conformations, and CNS PrPSc depositions (3,32). Strains have been identified in other natural prion diseases, including scrapie, BSE, and CJD (3). Intraspecies and interspecies transmission of prions from CWD-positive deer and elk isolates resulted in identification of >2 strains of CWD in rodent models (36), indicating that CWD strains likely exist in cervids. However, nothing is currently known about natural distribution and prevalence of CWD strains. Currently, host range and pathogenicity vary with prion strain (28,37). Therefore, zoonotic potential of CWD may also vary with CWD strain. In addition, diversity in host (cervid) and target (e.g., human) genotypes further complicates definitive findings of zoonotic and interspecies transmission potentials of CWD.
Intraspecies and interspecies passage of the CWD agent may also increase the risk for zoonotic CWD transmission. The CWD prion agent is undergoing serial passage naturally as the disease continues to emerge. In vitro and in vivo intraspecies transmission of the CWD agent yields PrPSc with an increased capacity to convert human PrPc to PrPSc (30). Interspecies prion transmission can alter CWD host range (38) and yield multiple novel prion strains (3,28). The potential for interspecies CWD transmission (by cohabitating mammals) will only increase as the disease spreads and CWD prions continue to be shed into the environment. This environmental passage itself may alter CWD prions or exert selective pressures on CWD strain mixtures by interactions with soil, which are known to vary with prion strain (25), or exposure to environmental or gut degradation.
Given that prion disease in humans can be difficult to diagnose and the asymptomatic incubation period can last decades, continued research, epidemiologic surveillance, and caution in handling risky material remain prudent as CWD continues to spread and the opportunity for interspecies transmission increases. Otherwise, similar to what occurred in the United Kingdom after detection of variant CJD and its subsequent link to BSE, years of prevention could be lost if zoonotic transmission of CWD is subsequently identified,...