In a first, the Food and Drug Administration on Friday approved AstraZeneca's FluMist, a nasal spray flu vaccine that anyone can self-administer.

The Food and Drug Administration (FDA) announced Friday it has approved the first flu vaccine that can be self-administered, with this version being a nasal spray as opposed to an injection. The

FluMist is the only nasal flu vaccine, but it is not new. The FDA approved it in 2003 for people 5 to 49 years old before expanding eligibility in 2007 to children as young as 2 years old — requiring in both instances that it be administered by a vaccine provider.