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Saint Paul, MN, United States

Baker B.H.,St. Cloud State University | Baker B.H.,Mississippi State University | Martinovic-Weigelt D.,Thomas University | Ferrey M.,Minnesota Pollution Control Agency | And 6 more authors.
Archives of Environmental Contamination and Toxicology

Contaminants of emerging concern, particularly endocrine active compounds (EACs), have been identified as a threat to aquatic wildlife. However, little is known about the impact of EACs on lakes through groundwater from onsite wastewater treatment systems (OWTS). This study aims to identify specific contributions of OWTS to Sullivan Lake, Minnesota, USA. Lake hydrology, water chemistry, caged bluegill sunfish (Lepomis macrochirus), and larval fathead minnow (Pimephales promelas) exposures were used to assess whether EACs entered the lake through OWTS inflow and the resultant biological impact on fish. Study areas included two OWTS-influenced near-shore sites with native bluegill spawning habitats and two in-lake control sites without nearby EAC sources. Caged bluegill sunfish were analyzed for plasma vitellogenin concentrations, organosomatic indices, and histological pathologies. Surface and porewater was collected from each site and analyzed for EACs. Porewater was also collected for laboratory exposure of larval fathead minnow, before analysis of predator escape performance and gene expression profiles. Chemical analysis showed EACs present at low concentrations at each study site, whereas discrete variations were reported between sites and between summer and fall samplings. Body condition index and liver vacuolization of sunfish were found to differ among study sites as did gene expression in exposed larval fathead minnows. Interestingly, biological exposure data and water chemistry did not match. Therefore, although results highlight the potential impacts of seepage from OWTS, further investigation of mixture effects and life history factor as well as chemical fate is warranted. © 2014 Springer Science+Business Media New York. Source

Green A.L.,U.S. Department of Agriculture | Kirkpatrick J.,U.S. Department of Agriculture | Douris A.,U.S. Department of Agriculture | Cosgrove S.,300 Chary Creek Dr. S. | And 2 more authors.
Food Protection Trends

In mid-January SO11, the Minnesota Department of Agriculture's (MDA) retail food sampling program detected Salmonella Hadar in a turkey product produced by a corporation with nationwide distribution. Enhanced surveillance led the Wisconsin Department of Health Services (WDHS) to notify the United States Department of Agriculture Food Safety and Inspection Service (FSIS] of three clinical cases of Salmonella Hadar infection from January. The case-patient isolates were indistinguishable by Pulsed-Field Gel Electrophoresis (PFGE) from the MDA sample. All samples had resistance to five antimicrobials on the Wisconsin State Laboratory of Hygiene (WSLH) clinical test panel. The WSLH determined that Salmonella isolated from intact turkey product from a case-patient's home was indistinguishable from the outbreak strain by PFGE and antimicrobial susceptibility testing. The Food Safety Inspection Service tworked with additional states with illnesses in the cluster to determine exposures. This report describes the investigation that resulted in the first FSIS raw poultry recall due to contamination with multidrug resistant Salmonella in the United States. Source

Lees C.H.,25 Robert St N | Rainbow J.,25 Robert St N | Danila R.,25 Robert St N | Schmitz A.,Centers for Disease Control and Prevention | And 3 more authors.
Emerging Infectious Diseases

During the pandemic (H1N1) 2009 outbreak, Minnesota, New Mexico, and Oregon used several surveillance methods to detect associated deaths. Surveillance using unexplained death and medical examiner data allowed for detection of 34 (18%) pandemic (H1N1) 2009-associated deaths that were not detected by hospital-based surveillance. Source

Kjaersgaard J.,25 Robert St N | Janz A.,6 Minnesota Ave. W. | Wagner M.,25 Robert St N
World Environmental and Water Resources Congress 2016: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management - Papers from Sessions of the Proceedings of the 2016 World Environmental and Water Resources Congress

Subsurface (tile) drains installed on agricultural land with poor natural drainage allows timelier field operation access and normally contributes to improved crop yields. Concerns over water quality and hydrologic impacts caused by subsurface drainage have led to an opportunity to improve some aspects of the practice. The overall objective of the project is to design, install and demonstrate water quality and quantity impacts of controlled drainage practices in the Red River Valley of the North and increase the acceptance and adoption of the practices. The project includes two field sites. Surface and subsurface runoff quantity are monitored continuously. Water samples are collected using automated water samplers and analyzed for nitrate-nitrogen. Meteorological information is collected using an automated weather station located within 2 mi. The meteorological information enables the calculation of crop water use utilizing the standardized Penman-Monteith equation and will support establishing the field water balance. In this document, we will discuss the project background and system design. Source

Rounds J.M.,25 Robert St N | Boxrud D.J.,25 Robert St N | Jawahir S.L.,25 Robert St N | Smith K.E.,25 Robert St N
Epidemiology and Infection

We determined characteristics of Escherichia coli O157:H7 pulsed-field gel electrophoresis clusters that predict their being solved (i.e. that result in identification of a confirmed outbreak). Clusters were investigated by the Minnesota Department of Health (MDH) using a dynamic iterative model. During 2000-2008, 19 (23%) of 84 clusters were solved. Clusters of ≥3 isolates were more likely to be solved than clusters of two isolates. Clusters in which the first two case isolates were received at MDH on the same day were more likely to be solved than were clusters in which the first two case isolates were received over ≥8 days. Investigation of clusters of ≥3 E. coli O157:H7 cases increased the success of cluster investigations. © 2011 Cambridge University Press. Source

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