Don’t say “eeew” just yet. Many of these organisms work to keep humans healthy, and results reported Wednesday from the government’s Human Microbiome Project define what’s normal in this mysterious netherworld.
One surprise: It turns out that nearly everybody harbors low levels of some harmful types of bacteria, pathogens that are known for causing specific infections. But when a person is healthy – like the 242 U.S. adults who volunteered to be tested for the project – those bugs quietly coexist with benign or helpful microbes, perhaps kept in check by them."
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Germs reshape view on health | CharlotteObserver.com & The Charlotte Observer Newspaper