It might be it might not be. I get hassled all the time by medical peeps to get a flu jab each year, but I never do. Doctor surgeries are paid to give you the jab so no wonder a nurse and the clinic reminded you - they do that to everyone.
Can't answer for the ad you saw but as it is something on your mind you are more likely to notice it.
The reason I don't get the jab even though I am a high risk category is that they are designed to work against last year's flu bug, not this year's. Plus I don't want all the other things that come with the jab - e.g. Formaldehyde and aluminium.
http://www.mercola.com/2000/nov/26/flu_shots.htm http://www.mercola.com/2003/dec/13/flu_vaccine.htm
I had a bad cold yesterday (not flu) and tried a fairly radical solution. It involved dropping 3% hydrogen peroxide in my ears! Ok sounds nuts, I went to bed straight afterwards and when I woke my sinuses had unblocked and my eyes which had been gunged shut the day before were clear!
http://www.mercola.com/2002/mar/13/h...n_peroxide.htm