I've seen news reports about the flu vaccine shortage in the U.S. this year. I'm not aware of any problem here in your neighbour to the north. Our province gave out free (well, paid for through our taxes) flu shots last year to everyone who wanted one. I didn't get a shot last year, and ended up with an extremely bad case of the flu, a gift from my brother and mother
My brother had the flu shot last year, and also ended up with the flu (likely the A Panama strain because that strain was not among the four strains in the vaccine). He thinks that if he didn't have the shot, he would have been much sicker. I think I will get the shot this year, even if it only prevents me from getting sicker if I'm attacked by this season's viruses.