You can get the influenza vaccine once a year to protect yourself from catching the flu, a viral respiratory illness that spreads very easily. The flu can lead to serious health complications and possibly death. When it comes to the flu vaccine, the question shouldn't be if you should get it, but rather what type you should get: shot or nasal spray. The spray form is becoming more common, and anyone between the ages of 2 and 49 who's generally healthy and not pregnant can get it. The CDC recommends the spray for healthy children between 2 and 8 years old. Follow the links below to find WebMD's comprehensive coverage about how flu vaccines work, who should get vaccinated, the history of the vaccine, and much more.