Hundreds of college campuses, cities and counties around California and the US are exploring sewers for the newest data stream to track covid and other infectious diseases
Since reopening campus at the University of California-San Diego last summer, university officials have relied on the tried-and-true public health strategies of testing and contact tracing. But they have also added a new tool to their arsenal: excrement.
That tool alerted researchers to about 85% of cases in dorms before they were diagnosed, according to a soon-to-be published study, said Rob Knight, a professor of pediatrics and computer science and engineering who helped create the campus's wastewater testing program.
Privacy concerns also need to be addressed, experts said. Wastewater data hasn't traditionally been considered protected personal health information the way diagnostic tests are. Health officials have managed earlier concerns about wastewater tracking of illicit drug use by sampling from large enough sewage streams to offer anonymity. But testing for certain health problems requires looking at DNA.
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