The deaths of two patients at a Los Angeles hospital are linked to the deadly bacteria CRE and more than 100 other patients may have been exposed to the drug-resistant superbug, a spokeswoman for the UCLA Health Systems said Wednesday. Roxanne Yamaguchi Moster said in a written statement that seven patients are known to have been infected by carbapenem-resistant enterobacteriaceae, which can include E. coli bacteria, and CRE was a contributing factor in the death of two of them.