(CNN) When Rosa Inchausti and her colleagues started testing wastewater in Tempe, Arizona, it was 2018 and they were not looking for coronavirus. As daily coronavirus counts top 70,000 as measured by standard testing, sewage testing suggests things are going to get a whole lot worse. Across the country, cities and universities are testing sewage to monitor the virus. Massachusetts still has a low percentage of coronavirus tests coming back positive at 1.5%. Wastewater testing doesn't recover whole virus, but instead pulls out two specific pieces of viral material called RNA.

Source: The Nation October 29, 2020 02:06 UTC