Testing for COVID-19 is a crucial part of keeping people safe and stopping the spread of the virus. But doing so is often a complicated process. Now, a new test by MIT and colleagues promises to make testing so cheap and effective that people could potentially do it every day. Researchers at MIT and the Broad Institute of MIT and Harvard, along with their collaborators at the University of Washington, Fred Hutchinson Cancer Research Center, Brigham and Women’s Hospital, and the Ragon Institute have devised a CRISPR-based diagnostic for COVID-19, called STOPCovid, that can achieve results in 30 minutes to an hour.