Search Results - "Sarreal, Chester Z"

Persistence of F-Specific RNA Coliphages in Surface Waters from a Produce Production Region along the Central Coast of California by Ravva, Subbarao V, Sarreal, Chester Z

“…F+ RNA coliphages (FRNA) are used to source-track fecal contamination and as surrogates for enteric pathogen persistence in the environment. However, the…”
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Strain differences in fitness of Escherichia coli O157:H7 to resist protozoan predation and survival in soil by Ravva, Subbarao V, Sarreal, Chester Z, Mandrell, Robert E

“…Escherichia coli O157:H7 (EcO157) associated with the 2006 spinach outbreak appears to have persisted as the organism was isolated, three months after the…”
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Characterization and Differentiation of Mycobacterium avium subsp. paratuberculosis from Other Mycobacteria Using Matrix Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry by Ravva, Subbarao V, Harden, Leslie A, Sarreal, Chester Z

“…subsp. (MAP), the causative agent of Johne's disease in cattle, is responsible for significant economic losses to the US dairy industry. The pathogen has also…”
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Bacterial Communities in Aerosols and Manure Samples from Two Different Dairies in Central and Sonoma Valleys of California by Ravva, Subbarao V, Sarreal, Chester Z, Mandrell, Robert E, Gilbert, Jack

“…Aerosols have been suspected to transport food pathogens and contaminate fruits and vegetables grown in close proximity to concentrated animal feeding…”
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Male-specific coliphages for source tracking fecal contamination in surface waters and prevalence of Shiga-toxigenic Escherichia coli in a major produce production region of the Central Coast of California by Ravva, Subbarao V, Sarreal, Chester Z, Cooley, Michael B

“…To provide data for traditional trace-back studies from fork to farm, it is necessary to determine the environmental sources for Shiga-toxigenic Escherichia…”
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Identification of protozoa in dairy lagoon wastewater that consume Escherichia coli O157:H7 preferentially by Ravva, Subbarao V, Sarreal, Chester Z, Mandrell, Robert E

“…Escherichia coli O157:H7 (EcO157), an agent of life threatening hemolytic-uremic syndrome, resides in ruminants and is released in feces at numbers as high as…”
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Altered protozoan and bacterial communities and survival of Escherichia coli O157:H7 in monensin-treated wastewater from a dairy lagoon by Ravva, Subbarao V, Sarreal, Chester Z, Mandrell, Robert E

“…Surviving predation is a fitness trait of Escherichia coli O157:H7 (EcO157) that provides ample time for the pathogen to be transported from reservoirs (e.g…”
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Fitness of Outbreak and Environmental Strains of Escherichia coli O157:H7 in Aerosolizable Soil and Association of Clonal Variation in Stress Gene Regulation by Ravva, Subbarao V, Cooley, Michael B, Sarreal, Chester Z, Mandrell, Robert E

“…Airborne dust from feedlots is a potential mechanism of contamination of nearby vegetable crops with Escherichia coli O157:H7 (EcO157). We compared the fitness…”
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Survival of Salmonella enterica in aerated and nonaerated wastewaters from dairy lagoons by Ravva, Subbarao V, Sarreal, Chester Z

“…Salmonella is the most commonly identified foodborne pathogen in produce, meat and poultry. Cattle are known reservoirs of Salmonella and the pathogen excreted…”
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Expression of Curli by Escherichia coli O157:H7 Strains Isolated from Patients during Outbreaks Is Different from Similar Strains Isolated from Leafy Green Production Environments by Ravva, Subbarao V, Sarreal, Chester Z, Cooley, Michael B

“…We previously reported that the strains of O157:H7 (EcO157) that survived longer in austere soil environment lacked expression of curli, a fitness trait linked…”
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Rapid detection of predation of Escherichia coli O157:H7 and sorting of bacterivorous Tetrahymena by flow cytometry by Hernlem, Bradley J, Ravva, Subbarao V, Sarreal, Chester Z

“…Protozoa are known to harbor bacterial pathogens, alter their survival in the environment and make them hypervirulent. Rapid non-culture based detection…”
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Wrinkled alfalfa seeds harbor more aerobic bacteria and are more difficult to sanitize than smooth seeds by Charkowski, A O, Sarreal, C Z, Mandrell, R E

“…At least 14 separate outbreaks of food poisoning attributed to either Salmonella enterica or Escherichia coli O157:H7 have been traced to sprouts in the past…”
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Bacterial communities in urban aerosols collected with wetted-wall cyclonic samplers and seasonal fluctuations of live and culturable airborne bacteria by Ravva, Subbarao V, Hernlem, Bradley J, Sarreal, Chester Z, Mandrell, Robert E

“…Airborne transmission of bacterial pathogens from point sources (e.g., ranches, dairy waste treatment facilities) to areas of food production (farms) has been…”
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Persistence of F-Specific RNA Coliphages in Surface Waters from a Produce Production Region along the Central Coast of California: e0146623 by Ravva, Subbarao V, Sarreal, Chester Z

“…F+ RNA coliphages (FRNA) are used to source-track fecal contamination and as surrogates for enteric pathogen persistence in the environment. However, the…”
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