CMU pilot project to test wastewater for COVID-19
Nov 2, 2020
https://www.themorningsun.com/news/local/cmu-pilot-project-to-test-wastewater-for-covid-19/article_effbf584-1d2b-11eb-91df-23f8218600fd.html
Public health authorities need to know when COVID-19 starts to spread in an area. That's not easy: The incubation period is long, and many infected people never have symptoms.
But there are clues if you know where to look.