Influenza viruses coat themselves in fatty material that hardens and protects them in colder temperatures-a finding that could explain why winter is the flu season, US researchers reported on Sunday. This butter-like coating melts in the respiratory tract, allowing the virus to infect cells, the team at the National Institutes of Health found. "Like an M&M in your mouth, the portective covering melts when it enters the respiratory tract," said Joshua Zimmerberg of the National Institute of Child Health and Human Development(NICHD), who led this study."It’s only in this liquid phase that the virus is capable of entering a cell to infect it." The new report,published in the journal Nature Chemical Biology,could lead to new ways to prevent and treat flu, said NICHD director Duane Alexander. "The study results open new avenues of research for thwarting winter flu outbreaks," Alexander said in a statement.
US study shows why winter is ‘flu season’:
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