Charting changes in a pathogen's genome yields clues about its past and hints about its future
- Written by Claire Guinat, Postdoctoral Fellow in Computational Evolution, Swiss Federal Institute of Technology Zurich

More than 250 million people worldwide have tested positive for SARS-CoV-2, usually after a diagnostic nose swab. Those swabs aren’t trash once they’ve delivered their positive result, though. For scientistslikeus they carry additional valuable...