Last year's flu season was a particularly scary one. More than 80,000 Americans died from the flu and flu-related complications, the highest flu death toll in more than 40 years.
Now that flu season is officially in full swing, doctors are urging folks everywhere to get the vaccine. Wondering about it's effectiveness? According to the CDC, last year's vaccine averted an estimated 5.3 million cases of the flu.
Here are some great answers from the CDC to many frequently asked questions about the flu vaccine.