Our 3 year old has gotten them each year.  Our 15 month old will be getting his first tomorrow  as last year he wasn’t old enough when flu season started, and then they ran out... As everyone has mentioned, it depends on the person.  Our 3 year old in general used to do crummy (high fevers) w/some of the immunizations (like Prevnar), but no problems w/the  flu shot.  Our 15 month old in general does very well w/shots, so I’m keeping my fingers crossed.  They are both SWCAH.  We won’t triple meds unless there is a fever or such.  Best wishes to everyone with this upcoming season!!!!