You Can Now See How Much COVID-19 Virus Is In Your Community's Wastewater
Keeping ahead of the COVID-19 virus is one of the best ways to ultimately put the pandemic behind us. And the past two years have shown that we need every tool at our disposal to track cases and predict, as much as possible, when and where surges might occur.
One methodtracking the virus shed by infected people through analyzing wastewaterhas emerged as a promising way to accomplish that. Anywhere from 40% to 80% of people infected with COVID-19 shed viral genetic material in their feces; studies have shown that monitoring wastewater for signs of SARS-CoV-2 can be an early indicator of when cases are climbing, or even if a new variant is starting to dominate. Genetic sequencing of wastewater samples can show signs of virus days before testing results can, since people often dont get tested until they experience symptoms. Wastewater is a beneficial source of information because it passively captures so much data, says Amy Kirby, program lead for the U.S. Centers for Disease Control and Preventions National Wastewater Surveillance System (NWSS).
The data is uniquely powerful because it captures the presence of infections from people with and without symptoms, and not affected by access to healthcare or the availability of clinical testing, she told reporters on Feb. 4. That data is now available on the CDCs COVID-19 Data Tracker. Its standardized so people can compare information across different states or even different counties. Up to this point, those states and counties were collecting and analyzing data on their own.
Tracking SARS-CoV-2 in wastewater reveals upticks of the virus, which can give communities a heads up for when cases are starting to increase and help them to prepare for greater demand on hospital and community health services. If virus levels are getting higher in wastewater, for example, local health officials could deploy more mobile testing units to areas where the infections are building, and help people to know if and when they should take stronger mitigation measures.
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