Bad reactions to vaccines do exist, and can be severely disabling, but autism is not something that can be caused by vaccines. If your nephew is autistic, then this was not something that could be caused by a bad reaction to vaccines. It sounds like your nephew experienced a whole host of complicated issues relating to this vaccine though, and I can imagine how managing autism could be made more difficult through other disabling conditions.

How so? (Not trying to start an argument; am genuinely curious for sources because I found it hard to find info when I googled this)

Edit: not the politico being owned by Springer, but Springer being partially responsible for the rightward shift