UNDATED--Health officials say senior citizens are most vulnerable to catching the flu, but the Center for Disease Control is now saying this year's flu vaccine only protected nine percent of seniors.
The shot only protected 56 percent of people under 65.
Researchers are now trying to figure out why, but they still insist that everyone should get a flu shot.
The shot only protected 56 percent of people under 65.
Researchers are now trying to figure out why, but they still insist that everyone should get a flu shot.