Fascinating hunt for the source of a superbug at UCLA's flagship hospital.
The bacteria arrived at UCLA unnoticed in September, hitching a ride on a patient. Unbeknownst to doctors, that patient — a woman being evaluated for a liver transplant — was carrying an unusually potent version of CRE, or carbapenem-resistant enterobacteriaceae. Some Americans carry these bacteria with no ill effects, but years of antibiotic overuse have created virulent strains immune to most treatments. By some estimates, CRE kills up to half of infected patients.