NATIONAL-- If you've ever thought getting a flu shot made you sick you might be right.
Health officials say you can't actually get the flu from the shot, but it's not so hot at preventing infection, either.
The CDC says this season's flu shot is 47% effective. It is better for children under 17, with a 61% rate. Worse for adults 50 or over with just 24% effectiveness.
Even when it doesn't prevent infection, people who are vaccinated generally get less severe symptoms for shorter periods of time.
