A variant of last year's pandemic infestation linked to fatal cases carried a mutation that enabled it to infect a unique subset of cells lining the airway, by the numbers to rule to new research. The study, due to be published next week in the Journal of Virology, suggests that the mutant virus could have afflicted the lungs' ability to clear out germs. The researchers behind the study, from Imperial College London, the Medical probe Council subject rite for Medical experimentation and the health center of Marburg said the findings best part the inherent for deadlier strains of flu to emerge and spread...

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