Development of methods for detection of viruses and bacteria in water and food. Environmental surveillance for viruses. Market prevalence of foodborne pathogens. Recovery of bacterial and viruses from surfaces. Freshwater toxic cyanobacteria blooms. Viruses of anaerobic digesters. Microbiological quality of produce. Irrigation and produce wash water quality. Bioaerosol sampling. Quantitative microbial risk assessment (QMRA). Health and environmental co-benefits of adaptive responses to climate impacts. Infection control. Indicators of fecal contamination. Comparative adsorption of enteric viruses in soil and groundwater. Phage ecology. Survival and persistence of pathogenic microorganisms. Impact of CAFOs on microbiological quality of water, soil, and vegetation. Alternative methods of water and wastewater disinfection. Surface disinfection. Biosafety. Mathematical models for exposure assessment. Policy implications of infectious agents. Poliovirus eradication.
Other research interests include: Endotoxin, Agricultural safety and health, Antibiotic resistant bacteria, Bioaerosols, Concentrated animal feeding operations (CAFOs), Drinking water, Environmental microbiology Fecal contamination, Food contaminants, microbial, Gram-negative bacteria, Methicillin-resistant Staphylococcus aureus, Microbial risk assessment, Mold, Molecular methods for infectious virus-detection, Norwalk-like virus, Pathogen detection techniques, Public health microbiology, Soil sampling, Vancomycin-resistant enterococci (VRE), Water quality, Wastewater disinfection, Solidwastes, Waste disposal onsite, Waterborne pathogenic microorganisms