One piece of good news can make all the difference. In the fight against antibiotic-resistant infections, a decades-old approach based on bacteria-slaying viruses called phages has been sidelined by technical hurdles, dogged by regulatory confusion, and largely ignored by drug developers in the West. But 2 years ago, researchers at the University of California, San Diego (UCSD), used phages to knock out an infection that nearly killed a colleague. Propelled by that success and a handful of others since, UCSD is now launching a clinical center to refine phage treatments and help companies bring them to market.