A flu shot for everyone !

I'm fed up with this message as I'm entering stores of all sorts : " Ask for a flu shot in our pharmacy".

When I came to the spuermarket this saturday, all the cashiers had the same tee-shirt with this message.

I went to Walgreen to have to have some stuffs for halloween and again posts about flue shots everywhere.  As pharmacies are in all stores, ...When you open your TV, ads about this are every ten minutes.

The flue shot is it useful for everyone? Wasn'it only for elderlies and sick people?

For sure drugs companies are making a lot of money in this period of the year with that.