Atmospheric bacterial contamination from landspreading of animal wastes: Evaluation of the respiratory risk for people nearby

Boutin, Pierre; Torre, Michele; Serceau, R.; Rideau, P.-J.

doi:10.1016/0021-8634(88)90092-3

Cited by 26 publications

(15 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 The overarching trend seen in these types of studies is that the bioaerosol concentrations decrease with increasing downwind distance from the source. 11,12 One interesting fact among bioaerosol studies is that, despite the excretion of zoonotic pathogens by livestock, very few if any are detected downwind of manure application sites and housing units. 13−15 A number of factors could be at play here, as pathogen levels in manures tend to be lower than that of indicator organisms; 16 plus the aerosol sampling methods and ambient conditions (e.g., temperature, humidity, solar radiation) could be impacting the viability of microorganisms resulting in fewer detects if culture-dependent techniques are used for enumeration.…”

Section: ■ Introductionmentioning

confidence: 99%

Estimation of Infectious Risks in Residential Populations Exposed to Airborne Pathogens During Center Pivot Irrigation of Dairy Wastewaters

Dungan

2014

Environ. Sci. Technol.

View full text Add to dashboard Cite

In the western United States where dairy wastewaters are commonly land applied, there are concerns over individuals being exposed to airborne pathogens. In response, a quantitative microbial risk assessment (QMRA) was performed to estimate infectious risks after inhalation exposure of pathogens aerosolized during center pivot irrigation of diluted dairy wastewaters. The dispersion of pathogens (Campylobacter jejuni, Escherichia coli O157:H7, non-O157 E. coli, Listeria monocytogenes, and Salmonella spp.) was modeled using the atmospheric dispersion model, AERMOD. Pathogen concentrations at downwind receptors were used to calculate infectious risks during one-time (1, 8, and 24 h) and multiday (7 d at 1 h d −1 ) exposure events using a β-Poisson dose−response model. This assessment considered risk of infection in residential populations that were 1 to 10 km from a center pivot operation. In the simulations, infectious risks were estimated to be the greatest in individuals closest to the center pivot, as a result of a higher pathogen dose. On the basis of the results from this QMRA, it is recommended that wastewaters only be applied during daylight hours when inactivation and dilution of airborne pathogens is highest. Further refinement of the dispersion and dose−response models should be considered to increase the utility of this QMRA.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Estimation of Infectious Risks in Residential Populations Exposed to Airborne Pathogens During Center Pivot Irrigation of Dairy Wastewaters

Dungan

2014

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…airborne bacterial counts steadily decreased with distance from the application site and pathogenic bacteria such as Sal111011el/a spp. and Klebsiella p11eumo11iae were not detected (Boutin et al .. 1988). During the spray irrigation of swine slurry.…”

Section: Aerosolization Of Pathogensmentioning

confidence: 99%

Sustainable manure management.

Leytem¹,

Dungan²,

Kleinman³

2013

Sustainable Animal Agriculture

View full text Add to dashboard Cite

show abstract

“…Boutin et al (1988) found that airborne concentrations of indicator organisms decreased with downwind distance during the land application of swine and cattle slurries via tractor-pulled tanker and fixed high-pressure spray guns. A decreasing airborne microorganism concentration with increasing downwind distance is the general trend also documented by researchers at CAFOs (Chinivasagam et al, 2010;Dungan et al, 2010;Green et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Use of a culture-independent approach to characterize aerosolized bacteria near an open-freestall dairy operation

Dungan

2012

Environment International

View full text Add to dashboard Cite

Animal manures are known to harbor a variety of zoonotic pathogens, which are suspected of being transported off-site as aerosols from confined feeding operations. In this study, aerosols were collected using a high-volume sampler downwind from a 10,000 cow open-freestall dairy and nearby fields being sprinkler irrigated with wastewater. DNA extracts were prepared from the aerosol samples, then a region of the16S ribosomal RNA gene was sequenced for bacterial identification and phylogenetic classification. At the dairy and irrigation sites, Proteobacteria (α-, β-, and γ-subdivisions) was the most abundant phylum, representing 78% and 69% of all sequences, respectively, while Actinobacteria, Bacteroidetes and Firmicutes represented only 10% or less of the sequences. Of the 191 clones sequenced from the dairy aerosol samples, 6 sequences were found to be homologous with uncultured bacteria from cow milk, rumen, and fecal samples. However, none of the sequence matches was affiliated with bacteria known to be pathogenic to otherwise healthy humans. Although our results do suggest a high diversity among the aerosolized bacteria, the sampling strategy employed in this study may not account for the variable nature of bioaerosol emissions.

show abstract

Atmospheric bacterial contamination from landspreading of animal wastes: Evaluation of the respiratory risk for people nearby

Cited by 26 publications

References 4 publications

Estimation of Infectious Risks in Residential Populations Exposed to Airborne Pathogens During Center Pivot Irrigation of Dairy Wastewaters

Estimation of Infectious Risks in Residential Populations Exposed to Airborne Pathogens During Center Pivot Irrigation of Dairy Wastewaters

Sustainable manure management.

Use of a culture-independent approach to characterize aerosolized bacteria near an open-freestall dairy operation

Contact Info

Product

Resources

About