The analytical methods and public reporting developed by SCAN are now being scaled nationally through WastewaterSCAN. SCAN’s co-investigators Alexandria Boehm and Marlene Wolfe are the scientific leaders of WastewaterSCAN.
In early 2020, scientists from Stanford University, the University of Michigan, and Emory University developed a method to find the COVID-19 virus (SARS-CoV-2) in sewage and to determine what it means about the level of infection in a community.
In November 2020, they partnered with wastewater treatment plants in 10 California communities and the life sciences research company Verily to sample and analyze wastewater solids. The Sewer Coronavirus Alert Network (SCAN) has been sampling, testing, and reporting results from those plants ever since.
Alexandria Boehm, PhD
Dr. Boehm is a professor of civil and environmental engineering and a senior fellow at Woods Institute for the Environment at Stanford. Her research focuses on pathogens in the environment including their sources, fate, and transport in natural and engineered systems.
She has been working on wastewater based epidemiology since the start of the COVID-19 pandemic. She also studies how pathogens are transmitted to humans through contact with water, feces, and contaminated surfaces. Dr. Boehm’s work addresses key problems in both developed and developing countries with the overarching goal of designing and testing novel interventions and technologies for reducing the burden of disease.
Marlene Wolfe, PhD
Dr. Wolfe is an assistant professor of environmental health at Emory. As an environmental microbiologist, engineer, and epidemiologist, her work focuses on developing tools to use environmental detection of pathogens to understand population health and risks, and to implement and evaluate interventions that reduce environmental exposure to pathogens.
Dr. Wolfe uses mixed methods approaches to understand the efficacy of interventions in the laboratory and how they are utilized and effective in context. Her work particularly addresses communities that are low-resource or facing emergencies to create sustainable and adaptable solutions to understand and manage their relationship to infectious disease.
Since late 2020, SCAN has tested wastewater from 10 communities for SARS-CoV-2, the virus that causes COVID-19. Over time, SCAN has added monitoring for COVID-19 variants and other pathogens including influenza A and B, mpox, and respiratory syncytial virus (RSV) using the same samples.VIEW SCAN’S DATA
The researchers leading WastewaterSCAN have added to the field of wastewater-based epidemiology through published papers and open-source protocols available online. An abridged list of articles and protocols appears below.