Bovine, Equine, Wildlife: Epidemiology and medical ecology of infectious diseases potentially transferred between livestock, wildlife and humans; assessing microbial contamination of the environment by livestock and wildlife. Special emphasis on microbial contamination of surface and groundwater from watersheds located in the Sierra Nevada Range, foothills along the San Joaquin Valley, and coastal regions of central and northern California. Key methods involve linking process-based experimental work with longitudinal epidemiological studies and molecular characterization to characterize rates of environmental loading, fate and hydrological transport, and dissemination of infectious diseases within and between host populations.

Mentoring of graduate students in several graduate groups; post-doctoral opportunities in the area of waterborne zoonoses and environmental epidemiology.

Depending on the project, I work closely with individual water districts, the USDA, USEPA, water quality regulatory agencies such as California (CA) Regional Water Quality Control Boards and CA State Water Resource Control Board, natural resource agencies such as the National Park Service, Natural Resource Conservation Service, Resource Conservation Districts, CA Department of Fish and Game, US Fish and Wildlife, and professional organizations such as the Backcountry Horsemen of California and the Society for Range Management.