Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture

Haack, Sheridan K.; Duris, Joseph W.; Kolpin, Dana W.; Focazio, Michael J.; Meyer, Michael T.; Johnson, Heather E.; Oster, Ryan J.; Foreman, William T.

doi:10.1016/j.scitotenv.2016.04.087

Cited by 21 publications

(13 citation statements)

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“…Current swine manure management practices utilize injection or tillage to incorporate manure to potentially reduce risks of nutrients or pathogens being directly transported to surface water in runoff after rainfall (Dell et al, 2011;Sterk et al, 2013). Still, this case study along with similar research suggests that both animal and human health are potentially at risk from ongoing manure management practices and subsequent surface water contamination (Gordoncillo et al, 2013;Haack et al, 2016;Haack et al, 2015;United States Environmental Protection Agency, 2013;Ziemer et al, 2010). For example, genes indicative of potentially zoonotic Shiga toxin-producing E. coli, enterohemorrhagic E. coli, and the Enterococcus esp.…”

Section: Introductionmentioning

confidence: 84%

Detection of hepatitis E virus and other livestock-related pathogens in Iowa streams

Givens

Kolpin

Borchardt

et al. 2016

Science of The Total Environment

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Manure application is a source of pathogens to the environment. Through overland runoff and tile drainage, zoonotic pathogens can contaminate surface water and streambed sediment and could affect both wildlife and human health. This study examined the environmental occurrence of gene markers for livestock-related bacterial, protozoan, and viral pathogens and antibiotic resistance in surface waters within the South Fork Iowa River basin before and after periods of swine manure application on agricultural land. Increased concentrations of indicator bacteria after manure application exceeding Iowa's state bacteria water quality standards suggest that swine manure contributes to diminished water quality and may pose a risk to human health. Additionally, the occurrence of HEV and numerous bacterial pathogen genes for Escherichia coli, Enterococcus spp., Salmonella sp., and Staphylococcus aureus in both manure samples and in corresponding surface water following periods of manure application suggests a potential role for swine in the spreading of zoonotic pathogens to the surrounding environment. During this study, several zoonotic pathogens were detected including Shiga-toxin producing E. coli, Campylobacter jejuni, pathogenic enterococci, and S. aureus; all of which can pose mild to serious health risks to swine, humans, and other wildlife. This research provides the foundational understanding required for future assessment of the risk to environmental health from livestock-related zoonotic pathogen exposures in this region. This information could also be important for maintaining swine herd biosecurity and protecting the health of wildlife near swine facilities.

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Section: Introductionmentioning

confidence: 84%

Detection of hepatitis E virus and other livestock-related pathogens in Iowa streams

Givens

Kolpin

Borchardt

et al. 2016

Science of The Total Environment

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“…Contamination with human fecal material from untreated sewage poses the greatest health risk because of the host specificity of many pathogens (Eisenberg et al, 2016), especially viruses. However, contamination from some animal sources, such as livestock and poultry, also poses a health risk due to the presence of pathogenic bacteria, such as Campylobacter, Escherichia coli O157:H7 and Salmonella, as well as the protozoa Giardia and Cryptosporidium (Bradshaw et al, 2016;Ehsan et al, 2015;Haack et al, 2016;Mantha et al, 2017). There is an indeterminate risk associated with non-point source pollution events, such as fecal deposition from some wildlife.…”

Section: Introductionmentioning

confidence: 99%

Fecal pollution: new trends and challenges in microbial source tracking using next‐generation sequencing

Unno

Staley

Brown

et al. 2018

Environmental Microbiology

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In this minireview, we expand upon traditional microbial source tracking (MST) methods by discussing two recently developed, next-generation-sequencing (NGS)-based MST approaches to identify sources of fecal pollution in recreational waters. One method defines operational taxonomic units (OTUs) that are specific to a fecal source, e.g., humans and animals or shared among multiple fecal sources to determine the magnitude and likely source association of fecal pollution. The other method uses SourceTracker, a program using a Bayesian algorithm, to determine which OTUs have contributed to an environmental community based on the composition of microbial communities in multiple fecal sources. Contemporary NGS-based MST tools offer a promising avenue to rapidly characterize fecal source contributions for water monitoring and remediation efforts at a broader and more efficient scale than previous molecular MST methods. However, both NGS methods require optimized sequence processing methodologies (e.g. quality filtering and clustering algorithms) and are influenced by primer selection for amplicon sequencing. Therefore, care must be taken when extrapolating data or combining datasets. Furthermore, traditional limitations of library-dependent MST methods, including differential decay of source material in environmental waters and spatiotemporal variation in source communities, remain to be fully understood. Nevertheless, increasing use of these methods, as well as expanding fecal taxon libraries representative of source communities, will help improve the accuracy of these methods and provide promising tools for future MST investigations.

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“…Pathogens are the leading cause of water quality impairments in rivers and streams in several states dominated by tile drainage, including Iowa (2014 data), Illinois (2010 data), and Indiana (2006 data) (https://iaspub.epa.gov/ waters10/attains_nation_cy.control). Extensive work has demonstrated the presence of and quantified concentrations of FIB and pathogens downstream of manure-amended lands (Soupir et al, 2006;Haack et al, 2016). The presence of microbial contaminants in surface waters presents a risk to public health through contamination of irrigation or drinking water or through recreational exposure.…”

Section: Introductionmentioning

confidence: 99%

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

Soupir

Hoover

Law

et al. 2018

Ecological Engineering

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Woodchip denitrification bioreactors are an important edge-of-field practice for treating agricultural drainage; however, their ability to filter microbial pollutants has primarily been explored in the context of wastewater treatment. Upflow column reactors were constructed and tested for E. coli, Salmonella, NO3-N, and dissolved reactive phosphorus (DRP) at hydraulic retention times (HRTs) of 12 and 24 h and at controlled temperatures of 10 and 21.5 °C. Influent solution was spiked to 30 mg L−1 NO3-N, 2-8 × 105 E. coli and Salmonella, and 0.1 mg L−1 DRP. Microbial removal was consistently observed with removal ranging from 75 to 78% reduction at 10 °C and 90-96% at 21.5 °C. The concentration reduction ranged from 2.75 to 9.03 × 104 for both organisms. HRT had less impact on microbial removal than temperature and thus further investigation of removal under lower HRTs is warranted. Nitrate concentrations averaged 96% reduction (with load removal of 14.6 g N m−3 d−1) from 21.5 °C columns at 24 HRT and 29% reduction (with load removal of 8.8 g N m−3 d−1) from 10 °C columns at 12 HRT. DRP removal was likely temporary due to microbial uptake. While potential for removal of E. coli and Salmonella by woodchip bioreactors is demonstrated, system design will need to be considered. High concentrations of these microbial contaminants are likely to occur during peak flows, when bypass flow may be occurring. The results of this study show that woodchip bioreactors operated for nitrate removal have a secondary benefit through the removal of enteric bacteria.

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Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture

Cited by 21 publications

References 50 publications

Detection of hepatitis E virus and other livestock-related pathogens in Iowa streams

Detection of hepatitis E virus and other livestock-related pathogens in Iowa streams

Fecal pollution: new trends and challenges in microbial source tracking using next‐generation sequencing

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

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