Once again, Barbara nails it. Personally, I think vaccines are a good idea, but the hysteria over this season's flu shot is ridiculous. Remember what Momma taught us? Sneeze into a Kleenex and for goodness sake, WASH YOUR HANDS!!! Good personal hygiene will stop most communicable bugs.
And most importantly, do NOT touch your eyes, nose or mouth after touching any commonly handled objects in public places, such as telephones, doorknobs, handrails, etc.
I never do and I haven't had a flu in over 20 years.
[in fact, it may be longer since I can't recall the last time I had the flu]
I have never had a flu shot, either.
Some folks carry those little antibacterial towlettes but I use just plain old hot water and sometimes a bit of soap, depending on what's available.
I also take odorless garlic capsules every single day.
I don't even recall the last time I got a cold.
Hubby started having flu symptoms a couple of years ago and I felt slightly "itchy throated".
I gave us both triple doses of garlic and the next day, we were fine.
He used to laugh at my "silly folk cure" but he doesn't now.
[YMMV]....:)