Marc Johnson, PhD

Marc Johnson, PhD, is a molecular microbiology and immunology researcher. His lab develops next-generation surveillance methods that track pathogens through both air and water systems.

Using air samplers in public spaces, his team monitors levels of known human pathogens circulating in the environment. They also collect environmental and wastewater samples from across the country, applying high-throughput sequencing to map the full range of viruses present. These data help identify and monitor both known and emerging infectious threats.

Originally focused on molecular virology and retroviral replication, Dr. Johnson’s lab pivoted during the COVID-19 pandemic to establish a statewide wastewater surveillance system for Missouri. Today, the team continues to advance innovative approaches to monitor community health through environmental data.