Show KI researchers your support in STAT’s annual bracket-style tournament to find the best innovations in science and medicine from the past year. Register or sign in to your free STAT account to vote for these three projects with big potential for human health: Matchup 3: the Li Lab’s easy-to-use test for predicting Covid-19 immunity Matchup 4: the Bhatia Lab’s nanoparticle sensor to detect bacterial vs. viral pneumonia