Researchers find 356 cases of carbapenem-resistant Klebsiella pneumoniae, mostly among elderly. It's a relative of E. coli, resistant to most antibiotics except colistin, a drug so powerful it can cause kidney damage. Studies in the U.S. and Israel have shown about 40% of infected patients die. A dangerous drug-resistant bacterium has reached Southern California healthcare facilities, according to a study released Thursday by Los Angeles County public health officials. Researchers found 356 cases of carbapenem-resistant Klebsiella pneumoniae, or CRKP, at healthcare facilities in Los Angeles County, mostly among elderly patients, said author Dr. Dawn Terashita, a medical epidemiologist with the...