For the first time, many people in the United States who want to protect themselves against the flu this respiratory virus season can order a vaccine to give themselves at home.

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.

Getting the flu is more than just uncomfortable—it can actually cause serious health complications (and even death) for older adults or those with pre-existing conditions such as asthma. Despite this,