Your flu risk may be linked to the year you were born

Story highlights

People born before and after 1968 have different risks for certain flu infections, a study suggests

"There's actually this kind of blatant protection that we're all carrying around," one expert says

Though the new finding is striking, experts still recommend getting your flu shot

CNN  — 

Flu season has arrived, and many people are bracing themselves for the sneezes, sniffles and sick days that lurk around the corner.

Yet you might not realize that you could already have a higher risk of certain flu infections than others – and that risk may be linked to your birth year.