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At the start of the Covid-19 pandemic, epidemiologists looked to our sewers to help figure out the scale of the virus\u2019 spread. It worked, giving some public health officials a heads-up before Covid surges. Now, researchers are taking the lessons from that pandemic, and working to put the wastewater from bathing, toilets, laundry machines and dishwashers to use in monitoring the spread of other diseases. WSJ\u2019s Danny Lewis speaks with environmental microbiologist, engineer and epidemiologist Marlene Wolfe about why it\u2019s so important to look at wastewater if we want to stop the next pandemic.\xa0\n\n\n\nFurther reading:\xa0\n\nFor Future Viral Threats, Health Officials Look to Sewage - WSJ\xa0\n\nFrom the Sewers, Clues to Covid-19\u2019s Next Moves - WSJ\xa0\n\nCDC Will Test Sewage for Polio in Some U.S. Communities - WSJ\xa0\n\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices