I used to get horrible colds, 2 or 3 a year, that made me unfit to work for a couple of days with a streaming nose and with a hacking cough for weeks afterwards. A friend suggested I try the flu jabs because she said they took care of colds too. I have had them for 3 years now and not had a cold since. No side effects either. So they've improved my life considerably, even if they're preventing the wrong illness. Sorry to hear they aren't precenting the right illness, but I sure hope they don't end the programme.
Though they only guess at what strain of flu is going to hit each year, I believe we usually get the same one for two or three years running till another one comes along, so I'd have thought they'd be effective most years.