The story was plagiarized, probably from the Independent, and re-paraphrased in places. Nothing mentioned about the mother being vaccinated.
Baby’s arm amputated at 10 days old after he suffered blood clots in the womb
https://news.yahoo.com/baby-arm-amputated-10-days-145340898.html
I knew a child 30 years ago who had had strokes in the womb. So, you are right, not necessarily covid vax related.
Because Yahoo is such a trusted site. I bet you get all your new from CNN also