We don't get the flu in our family, even in 'bad' years and we don't get any shots unless it's for a deadly strain of flu (remember H1N1?). I can't have the shots anyway... I have a lactose/egg allergy. I remember having the flu in 1990 (that was horrible!). Each of my teenagers has had it once. My youngest (age 8 yrs) has never had it. Maybe we had a superhero in our family tree and no one ever told us! No, there must be a reason... let's see...
We eat organic. Right there, you're eliminating cancer causing ingredients and other ingredients that affect you negatively. We grow much of our own veggies in organic soil in our home garden.
We take daily vitamins because it's impossible to get all nutrients otherwise.
We eat nearly all meals prepared from scratch with minimal starch/bread/pasta... When I say minimal, I mean those ingredients show up on the menu about once a week as a side item. We also only eat the gluten free bread/pasta. The kids probably eat bread a bit more than I do (they go through one loaf a week) for sandwiches.
We include almost daily these items (immunity booster and sicky-germ fighters) in our food choices: onion, garlic, lemon, spices.
We wash hands and clean with soap and keep the house clean (daily vacuum, wipe all counters and door knobs).
When we are in restaurants, we wash hands after meals, just before leaving, in case we touched an infected place.
We do a lot of laughing (funny movies!) and tickling (because it's fun!). Studies show that happier people are generally less sick. We don't bottle up anger. I'd say once a week or so, someone around here gets ticked off and let's everyone know it. Sharing upset is healthy if done respectfully and to get positive results. So, is venting in other ways, like journaling or exercising, which leads me to...
We exercise nearly daily for at least 30 minutes. I make my kids walk to/from their activities, too. It's good exercise for them, alone-time for me (a must for every parent's mental health!) and I get to save gas/time, too... super win-win.
So, if I were doing all this and still did get the flu, I'd see my doctor to check for immunity issues. Sometimes, people have hereditary issues they were unaware of and just suffered through that left them predisposed to catching airborne illness.
Kasman had a great tip I didn't think of - Wipe down your keyboard with disinfectant wipes. I might put a container of wipes on my desk now...
Cheers and feel better all!