The H3N2 flu virus seems to be the primary strain going around this season. The CDC has already confirmed that this year's flu vaccine is not as effective because the H3N2 virus has already mutated, warning us this flu season may be severe.
Scientists have developed a formula that can predict the evolution of the seasonal flu for the next year. This will allow health providers to prepare and the public to be aware of the most serious instances of flu.
With mass media attention circulating around the worldwide H1N1 pandemic, little focus has been put on this season's more virulent flu variety found in the H3N2 bug. The presence of both varieties could make for a complicated flu season.