Why scientists are looking for clues about coronavirus variants in wastewater
COLUMBIA – Mo. — Offshoots of the omicron coronavirus variant have driven a spike in cases in the U.S. Some scientists believe clues to how these subvariants emerge lie in wastewater, and tracking them down could help prevent the next dangerous strain of the virus. https://cpa.ds.npr.org/s4780019/audio/2022/05/covidvariants-web-edit.mp3 Listen to this story here. Marc Johnson, a professor