Even though the Centers for Disease Control and Prevention recommend most people to get a flu shot, a new review of studies finds that it may actually not be 100 percent effective at guarding against the flu -- in fact, the effectiveness may only be 59 percent for people ages 18 to 65.
The review, published in the journal The Lancet, examined the efficacy of the most commonly used flu shot in the United States, the trivalent inactivated vaccine (TIV). The shot makes up 90 percent of all flu shots given in the U.S., WebMD reported.
To read the full, original article click on this link: Flu Shot Only 59 Percent Effective, Analysis Finds
