CDC-NWSS report highlights value of wastewater surveillance

Surveillance has expanded from 20 to 53 jurisdictions across the United States

CDC-NWSS graphic
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The Centers for Disease Control and Prevention and the National Wastewater Surveillance System (NWSS) confirm that wastewater surveillance provided a valuable tool for monitoring SARS-CoV-2 circulation during the COVID-19 pandemic. 

Today, surveillance has expanded from 20 to 53 jurisdictions across the United States, with increasing capacity to test for more respiratory pathogens. 

Details in the CDC-NWSS December 1, 2023 Morbidity and Mortality Weekly Report (MMWR) highlight the use of wastewater data by the four NWSS Centers of Excellence, which include California; Colorado; Houston, Texas; and Wisconsin, to guide public health action during the 2022–23 respiratory disease season. 

The four CDC-funded NWSS Centers of Excellence, established during 2021–2022, translated wastewater data into real-time public health action for multiple respiratory pathogens, highlighting the contribution of wastewater surveillance in monitoring disease circulation and helping to guide public health response. During 2022–23, wastewater sampling covered a large proportion of the sites’ populations: 94% (Houston, Texas), 67% (California), 65% (Colorado), and 50% (Wisconsin). 

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