AdvertisementScientists Modify Viruses With CRISPR To Create New Weapon Against SuperbugsMay 22, 2019Rob SteinfacebookEmailAbout two years ago, Alphonso Evans went to the hospital for what he thought was just another bladder infection and ended up in intensive care. In an effort to combat antibiotic-resistant superbugs, scientists have created "living antibiotics" made of viruses that have been genetically modified using the gene-editing tool CRISPR. (Rob Stein/NPR)