Dr. Shannon Kluppel. October 9, 2020 ·. FLU vaccine is here for everyone age 6 months to 18 years! I have the FluMist (nasal spray for age 2 years and up) as well as the injectable form. From the CDC: Among the 188 reported pediatric flu deaths: 43% (81) occurred in children younger than 5 years old. 12 occurred in children younger than 6 ....