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Airborne bacterial pathogens and indicator E. coli present near beef cattle feedlots in California have been studied to assess the potential impacts on public health and the environment. This report evaluates the concentrations of airborne bacterial pathogens and indicator E. coli in the proximity of beef cattle feedlots in California, with a focus on the potential health implications.

Beef cattle feedlots are large-scale animal production facilities that are used to raise and feed cattle prior to slaughter. In California, feedlots are typically located in rural areas and are often close to residential areas. As a result, there is potential for air pollution, including dust and odor, to reach the surrounding communities. Airborne bacterial pathogens, including Escherichia coli (E. coli) and indicator organisms, are of particular concern due to their potential to cause human illness and environmental degradation.

E. coli is an indicator organism used to assess the presence of other bacterial pathogens, as it has been shown to be a reliable marker for fecal contamination. Indicator E. coli concentrations in the environment can signify the presence of other bacterial pathogens that may be associated with human health risks.