I think the hygiene aspect is about long-term accumulation of pathogens. You bathe the baby several times a week if not daily. Then you put on a cloth that has

I think the hygiene aspect is about long-term accumulation of pathogens. You bathe the baby several times a week if not daily. Then you put on a cloth that has been exposed to many pathogens over X time. But I guess boiling shouldn't take a day, since we can pasteurize milk in a very short time.