I had Covid at 8 months pregnant, and baby was fine; I was fine. My midwife wasn't worried, I did my own research, and at that time--7 months ago, mind you, there was no concern. So either they've changed their minds (gee, really?) or they're studying vaccinated women.
My midwife said that there have been more issues w/pregnant women in terms of Premature rupture of membranes and preterm labor since the vax came out. For what it's worth, she told me the real issue was the vax shedding. I would think that's your case here. Unfortunately, unless you live in a bubble, you just can't avoid it.
I'm sorry, and prayers for your wife and baby.