Sous vide pasteurization for pregnant wife
Pasteurization is the process of heating food to kill pathogenic bacteria, rendering it safe to eat. Pasteurization is a function of temperature and time.  Using sous vide, one could easily have a pasteurized rare steak, or even a "raw" egg. So, yes...pasteurized food is able to be consumed more safely by people who are immunocompromised or pregnant.  These guides will be helpful.