coronavirus based on a substance we don’t want to look at, think about, or be near: human waste.And they hope to refine their sewage-based surveillance system to the point that it can monitor individual neighbourhoods or institutions, like long-term care homes, they say.The system they’re developing now is focused on the coronavirus, but they say they’re hoping it will have a longer-term use dealing with future diseases.“Everybody has to poop,” says Ryerson University professor Kimberly Gilbride. “It’s something that we can’t avoid.” Coronavirus traces found in Spanish sewage sample from March 2019 Testing statistics for the coronavirus don’t tell the whole story: not everyone with the disease gets tested or shows symptoms in the first.