15/07/2009

Flu Strains Circulate Before Becoming a Pandemic. -- (Sci-tech.today)

 

There are eight genes in the influenza virus. By using computer-generated models to estimate the rate at which they evolve, scientists can work out a timeline of the evolutionary history of the virus. Influenza is constantly evolving, which is why getting the flu one year doesn't necessarily protect against next year's flu.....

Flu Strains Circulate Before Becoming a Pandemic

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