I'm obviously in the minority here, but my family doesn't get the flu shot. My son w/ CF turned 2 in August. We did all get it last year (including him) b/c I thought since he was <2 he was more likely to have complications if he did get it. But I don't plan on anyone getting it this year. Contrary to what some other posts have said, it's only 50% effective in any given year and it's not like you "store up" immunity for every strain you've ever gotten exposed to. My family (including Gus) has always been VERY healthy...I believe in building up your immune system naturally by being exposed to life. In addition, I give Gus probiotics to help keep his natural intestinal bacteria in balance. FYI, 70% of your immune system is mediated through your gut. Anyway, just my opinion. And definitely open to revision should Gus start to get sick. Hope this helps.