Three family members with vaccine reactions

My Nana who’s in her early 80’s had a heart attack (1st ever) following her 1st. Yet to have her 2nd shot.
My Uncles wife in her early 60’s had a blood clot in her temple and almost went blind following her 2nd.
My Mother-in-law who’s in her early 70’s had an abscess in her ear/bleeding from her ear, closely following her 2nd.

Is This NZ Based or Overseas? : NZ