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.
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