Yes.
I’ve pointed these studies out here since the beginning of the Wuhan flu.
I’m not sure there is evidence this delayed response is occurring due to the current vaccines, but it is something to monitor.
I recall a couple of articles from 9 or ten months ago theorizing why the COVI19 death rate was so high in Italy. It was speculated that many in Italy had taken the SARS vaccine in the early 2000s; which had negative long-term effects on the immune system.