Just because it's rare doesn't mean it hasn't happened to him. My dad was also poorly for a few days a few years ago after having the flu jab. Could have been coincidence? Possibly. But also my kids have been ropey for a day or two after having the nasal flu jab so it does happen.
Back on topic, Chise has the voice of reason yet again. Ignore the TV headlines.
Old people getting ill in flu season isn't rare though, it's a practical certainty every couple of years, as is that the flu jab does a hell of a lot less harm than good.
There's simpler correlations to find than attributing flu jab with extreme illness.
I'm not on about minor side effects mind, as these are minor of course, but if someone is getting really ill from a flu jab, then the chances are the live virus will pose far more risk or they're at high risk anyway. Had he had one of the flu strains he wasn't protected from, he could have been 10x worse.
The only people advising against getting the flu jab should be GP's/ Doctors etc, but likely only when they know what is and what isn't causing the problems, and what problems are being prevented. An unrealised problem (not getting flu), is better than the realised problem (getting the Flu), and not being around next year to mention it.
I would advise backing up someone's anti flu jab stance, especially if they have a history of illness, just direct them to a GP and let them then decide between them.
Good shout on Chise, I mentioned people need to calm down earlier, and they really do, for now. I read Chise's stuff yesterday/ last night along with many others, seems like the ones who have been advocating vaccines and safety are the ones who are least concerned, especially for now, none of them seem to be having a melt down.
Papers/TV just taking advantage of a story, always do, always will.