A family I knew back in NC got Covid and my friend's pregnant wife had to go to the ICU. They performed an emergency C section on baby that was six weeks early after a few days. The wife was intubated on a ventilator for a few weeks and somehow survived, but now needs speech, respiratory, and physical therapy. The baby was very small, I think less than 5 lbs, required tube feed through the umbilical cord, had to get kidney surgery at a week after "birth", but tested negative for covid, thankfully. Seems that the wife and baby have survived the worst of it and are now on the recovery path. Admittedly there were some preexisting conditions, but nobody was vaccinated. I think the family will be vaccinated going forward because it seems that natural immunity is poor, especially against delta.