Two years ago, scientists in Kansas and around the world found an interesting way to track the novel coronavirus: sewage water. By measuring the concentration of virus particles in flushed bowel movements, they are able to estimate how much of the virus was generally present in any given area. People infected with the coronavirus shed it through breathing, sneezing, coughing and in their stool. By measuring viral particles in the sewer system, known as wastewater surveillance, scientists can capture the total amount of virus present in large groups of people regardless of whether they had been tested.
Source: Wichita Eagle