Edward G. Dudley, Ph.D. is the Director of the E. coli Reference Center and a Professor of Food Science at the Pennsylvania State University. He has a broad background in molecular biology, physiology, and foodborne bacteria genomics, with expertise in both beneficial and pathogenic species. His current research program focuses on factors that drive the virulence of Escherichia coli O157:H7 and the development of DNA sequence-based methods for tracking pathogen spread during foodborne illness outbreaks, including wastewater monitoring. 

Mindy Brashears, Ph.D. is the USDA's Under Secretary for Food Safety. Dr. Brashears previously served as Under Secretary for Food Safety from 2020–2021, and Deputy Under Secretary in 2019. Dr. Brashears returns to USDA from Texas Tech University, where she was a Paul Whitfield Horn Distinguished Professor of Food Safety and Public Health, the Roth and Letch Family Endowed Chair for Food Safety, and the Director of the International Center for Food Industry Excellence.

Justin Ransom, Ph.D. is Administrator of USDA's Food Safety and Inspection Service (FSIS), where he oversees FSIS' mission to ensure the safety, wholesomeness, and proper labeling of America's commercial supply of meat, poultry, and processed egg products. He leads the agency's modernization efforts, streamlining inspection systems, strengthening public health protections, and advancing science-based policies. 

Elena Medo, M.B.A. is an entrepreneur, researcher, and inventor who has spent nearly 40 years transforming neonatal care through leadership and innovation. She has secured numerous patents, raised over $40 million across four companies, and built a legacy of firsts, including the first commercially available shelf-stable donor breast milk product; the first milk bank owned exclusively by nursing mothers; and the first medical device designed to analyze human milk. Today, as CEO and co-founder of Leonie Health PBC, established in 2023 with her daughter, Adrianne Weir, Elena is developing a revolutionary product that replicates the immune properties of colostrum to protect preterm infants against the three deadliest neonatal infections—necrotizing enterocolitis (NEC), ventilator-associated pneumonia (VAC), and sepsis—which together claim the lives of more than 30,000 hospitalized infants per year.

Alissa Welsher, Ph.D. is a Senior Consultant at Elanco Poultry Food Safety. Dr. Welsher received a bachelor’s degree in biological sciences from the University of Pittsburgh, as well as a master’s degree in poultry science and a Ph.D. in cell and molecular biology from the University of Arkansas. Her area of expertise is meat and poultry food safety, and she specializes in integrated pest management (IPM).

Lyle Probst is the CEO of NomadX and an accomplished entrepreneur with more than 25 years of experience in operations, product development, engineering, biodefense, and advanced technology commercialization.

Alex LeBeau, Ph.D., M.P.H., CIH is the owner of Exposure Assessment Consulting LLC in Orlando, Florida, where he offers toxicology, industrial hygiene, risk assessment, and public health consulting services. Over his 13-year career, he has evaluated environmental and occupational exposures and has performed toxicological evaluations of chemicals and biological agents. He has also performed human health risk assessments of contaminated sites using U.S. Environmental Protection Agency (EPA) and state regulatory guidelines and has monitored remediation activities at those sites. To evaluate the exposure impacts on building occupants, he has performed indoor environmental quality assessments, including Legionella and water quality assessments, at healthcare, residential, and industrial facilities.

In this bonus episode of Food Safety Matters, we speak to MilliporeSigma food regulatory compliance experts about how regulators, laboratories, and manufacturers are responding to emerging food safety risks in an increasingly complex landscape.