Flu's evolution strategy strikes perfect balance

Scientists have uncovered how the flu virus effectively evolves within and between host species. These findings overturn long-held assumptions about how the virus spreads. Better understanding how the flu replicates and evolves to infect new hosts will help scientists find new ways to fight the flu. One option is the development of therapies that take advantage of the new findings by promoting mutagenesis -- treatments designed to generate increased mutations that will ultimately kill the virus.

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