The annual flu shots are supposed to fight up to four strains of the flu...but there's a chance the virus could mutate and become resistant to vaccinations.
According to a report by the Center for Disease Control (CDC) that's what happened this year. 2014 - 2015 could be a terrible horrible, no good very bad year for outbreaks.
This year’s strain is known as H3N2, but the H3N2 strain has mutated. Doctors are concerned. The CDC reports:
“We are recommending strongly still that people who haven’t been vaccinated get vaccinated. Every year vaccine is the best way to protect yourself against the flu. Though reduced, this cross-protection might reduce the likelihood of severe outcomes such as hospitalization and death. And the vaccine still protects."
Why not just whip up another flu fighting vaccine? The CDC says it's too late in the season to roll out a new flu shot vaccine. However, they say that everyone should get a shot. The flu season is typically November through March and particularly dangerous for the elderly and children.
For up-to-the-minute information, visit the CDC website.