Res Microbiologist
karnsj@ba.ars.usda.gov
Phone: (301) 504-6493 ext. 346
Fax: (301) 504-6608
Room 201
10300 BALTIMORE BLVD
BLDG 173 BARC-EAST
BELTSVILLE, MD, 20705-2350

Project List

	Dairy Management Practices and the Transmission of Zoonotic Pathogens in Milk
	Pilot Study of Factors Affecting Maintenance of Mycobacterium, Salmonella, E. Coli and Listeria on Dairy Farms
	Pilot Study of Factors Affecting Maintenance of Mycobacterium, Salmonella, E. Coli and Listeria on Dairy Farms
	Pilot Study of Factors Affecting Maintenance of Mycobacterium, Salmonella, E. Coli and Listeria on Dairy Farms
	Rapid Detection of Anthrax and Other Zoonotic Pathogens That May Be Used As Bioterrorism Agents
	Pilot Study of Factors Affecting Maintenance of Mycobacterium, Salmonella, E. Coli and Listeria on Dairy Farms
	Pathogen Transport and Dissemination from Manure

Publications

	Use of Real-Time Polymerase Chain Reactions(pcr) for the Detection of Pathogenic Microbes in Bulk Tank Milk- (25-Jun-03)
	Real-Time Pcr Assays for the Quantitation of Enteropathogenic E.COLI in Water- (01-May-03)
	Survival of E. Coli 0157:h7 in Soil- (01-May-00)
	Prevalence of Salmonellae, Listeria Monocytogenes and Fecal Coliforms in Bulk Tank Milk on U.S. Dairies- (02-Jun-04)
	Detection of Fate of Bacillus Anthracis (Sterne) Vegetative Cells and Spores Added to Bulk Tank Milk- (10-Jul-03)
	Survey of Bulk Tank Milk in the United States for Food-Borne Bacterial Pathogens- (25-Jun-03)
	Using Portable Real-Time Polymerase Chain Reaction (Rt-Pcr) Assays to Detect Salmonella Ssp. in Raw Milk- (02-May-03)
	Using Portable Real-Time Polymerase Chain Reaction (Rt-Pcr) Assays to Detect Salmonella in Raw Milk- (02-May-03)
	Prevalence and Molecular Characterization of Enteropathogenic E. Coli in Streams Along An Urban-Rural Gradient in the Baltimore, Maryland Metropolitan Area- (25-Feb-03)
	Influence of Rhamnolipids and Triton X-100 on the Desorption of Pesticides from Soils- (12-Aug-02)
	Animal Manure: Bacterial Pathogens and Disinfection Technologies- (01-Aug-02)
	Fluorescent Real-Time Molecular (Pcr) Detection of Zoonotic Bacteria and Viruses in Bulk MILK.- (10-Jun-02)
	Survival of E. Coli 0157:h7 from Manure and Irrigation Water in Soil and in the Presence of Cover Crops- (01-Jul-01)
	The Influence of Rhamnolipids and Triton X-100 on the Biodegradation of Three Pesticides in Aqueous Phase and Soil Slurries- (27-Apr-01)
	Quantitative Detection of Escherichia Coli O157 in Surface Waters Using Immunomagnetic-Electrochemiluminescence (Im-Ecl)- (01-Apr-01)
	Effect of Rhamnolipids Produced by P. Aeruginosa Ug2 on the Solubilization of Pesticides.- (01-Sep-00)
	The Influence of Rhamnolipids and Triton X-100 on the Biodegradation of Three Pesticides in Aqueous Phase and Soil Slurries.- (28-Apr-00)
	Effect of Nutritional and Environmental Conditions on the Production and Composition of Rhamnolipids by P. Aeruginosa Ug2.- (18-Mar-00)
	Leaching of E. Coli 0157:h7 in Diverse Soils under Various Agricultural Management Practices- (06-Dec-99)
	Hplc Method for the Characterization of Rhamnolipid Mixtures Produced by P.AERUGINOSA Ug2 on Corn Oil- (01-Nov-99)
	A Combined Immunological-Pcr Biosensor for Detection of Water Borne E. Col 0157:h7- (15-Jan-04)
	Surveying the Baltimore Ecosystem Study Stream Sites for the Presence of Enteric Pathogens- (05-Sep-03)
	Molecular Tools to Evaluate the Epidemiology and Control of Waterborne Zoonotic Infections- (01-May-03)
	Estimating Escherichia Coli O157 Popul Ations in Water Samples Using Immunomagnetic- (01-May-03)
	A Handheld Real Time Thermal Cycler for Bacterial Pathogen Detection- (19-Sep-02)
	Mobile Laboratory for Bacillus Anthracis Detection- (16-May-02)
	Detection and Characterization of Pathogenic E. Coli in Surface Waters: Implications for Preharvest Produce- (01-Aug-03)
	Evaluation of Parameters Affecting Detection of Escherichia Coli 0157 in Enriched Water Samples Using Immunomagnetic Electrochemiluminescence- (29-Jul-03)
	Release Rates of Manure-Borne Coliform Bacteria from Data on Leaching Through Stony Soil- (06-Jan-03)
	Rapid Extracton of DNA from Escherichia Coli and Cryptosporidium Parvum for Use in Pcr- (23-Aug-01)
	Estimation of Viable Escherichia Coli 0157 in Surface Waters Using Enrichment in Conjunction with Immunological Detection- (26-Mar-04)
	A Field Investigation of Bacillus Anthracis Contamination of U.S. Department of Agriculture and Other Washington, D.C., Buildings During the Anthrax Attack of October 2001- (02-Apr-02)