That's fine and mostly reasonable, and you don't need to convince me that flu shots don't cause autism or cancer. What I'm saying is that I wasn't able to glean what exactly you meant from the article as you worded it.

You could have addressed those autism/Alzheimer claims clearly, or refused to address them, but you somehow tried to do both. Maybe that wasn't a good idea.

As noted in the paper, people with GBS, allergies to gluten, allergies to eggs, etc. can have serious adverse responses to flu shots, but I would expect people to know whether or not they had these sorts of problems before they went in to get a flu shot.

Maybe, but in a cost analysis I'd expect to see not what seems reasonable to you, but what the numbers say about what happens in reality. How many people actually get severe allergic reactions after a flu shot? Have there been deaths, and if so, what is the risk?

Well, apparently it's less than 1 in a million for that first one, and nothing definite about the second if we exclude paranoia sites, so I guess that's that.