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American scientists have shed light on why a common and often serious lung infection in people who have cystic fibrosis can be so hard to treat.
Researchers at the University of Washington have discovered different survival traits in bacteria, depending on where in the lungs they are lodged.
Scientists say this may have helped some bugs evade antibiotic therapy.
One in every 2,500 babies born in the UK has the genetic condition which affects the lungs and digestive system.
The mucus produced leaves people prone to stubborn lung infections, often caused by Pseudomonas aeruginosa bacteria.
Inspecting lung specimens, researchers discovered that separate regions of the same lung had vast arrays of pseudomonas that behaved differently, despite originating from the same strain of bug.For more click here