Just cruising this thread a thought occurred to me... It always amazes me how people who have no real working knowledge of something can act as an authority and have such strong opinions....Maybe a pilot forum isn't the best place to get info on vaccines. Like some others have said the best place to ask these questions is in your MD's office or at the pharmacy. Health care's main model of care has changed a lot lately. They try to encourage more of a team approach to patient's decision making- with the patient being the center of that decision team. It's called patient centered medical care. A good provider should (and will) be able to show you hard medical facts based on studies or statistics that show the actual value/risk benefit for any medicine or procedure. I will boil down some of the simple truths about the Flu/Flu shots: -You cannot get the Flu from the flu vaccines -Like others have said, they use statistics and trends to "guess" what exact strains are in the vaccine based on what they think will be around year to year. Even if they strike out and it's not as effective as it could have been it is much more effective than nothing -Influenza kills about 5,000 people a year. True, mostly old or young. But you can certainly transmit -Flu, even though it probably wont kill you if your in relatively good health, is not fun and causes you to waist a lot of time being sick -The flu shot is really, really safe and their are minimal side effects I could do similar fact stating for the shingles vaccines but you probably get my point. Talk to your MD or pharmacist. That's why they are there and what they get paid to do. If they seem not to take your questions seriously or don't answer satisfactory then it's time to find a new MD or pharmacy.