My baby is 1yr 5 months age,she hasn't got flu shots even once till date.When should I get it administered??

A. Flu shot. Flu shots can be given to children 6 months and older. Side effects might include soreness, redness and swelling where the shot was given. A fever, muscle aches and headache also can occur. Nasal spray. The nasal spray flu vaccine can be given to healthy children 2 years and older. Side effects of the nasal spray in children might include a runny nose, wheezing, headache, vomiting, muscle aches and a slight fever