FluMist, the first self-administered flu vaccine spray, is now available for purchase. Here's everything to know, from cost to age requirements and more.

FluMist Home is an influenza vaccine that’s administered via nasal spray, which means no needles and no waiting in line at the pharmacy. Plus, it’s covered by insurance and experts say it’s about as effective as the traditional flu vaccine. But there’s a catch: It’s only been approved for people ages 2 to 49.