Govt. gene sleuths stop superbug that killed 6

In this photo taken Aug. 21, 2012, Dr. Tara Palmore, deputy hospital epidemiologist at the National Institutes of Health Clinical Center, left, and Dr. Julie Segre, a geneticist with the National Human Genome Research Institute, pose at the NIH Clinical Center in Bethesda, Md. Last year a deadly superbug spread through the nation's leading research hospital, killing six patients before it could be stopped. Scientists at the National Institutes of Health hospital in Bethesda, Md., scrubbed with bleach, locked down patients and even ripped out plumbing. In the end, it took gene detectives analyzing the germ's DNA to trace it to its source. It came from a New York City patient who was admitted for a medical study. (AP Photo/Patrick Semansky)Over six frightening months, a deadly germ untreatable by most antibiotics spread in the nation's leading research hospital. Pretty soon, a patient a week was catching the bug. Scientists at the National Institutes of Health locked down patients, cleaned with bleach, even ripped out plumbing — and still the germ persisted.