Reply To: Studies on vaccines you might have missed.👨‍🔬💉🚫

If anything, homes were cleaner from 1950-1980 with modern appliances and
STAY AT HOME Mothers but allergies didn’t explode until 1990s – when mothers
were working and housekeeping was lower standard.
So the “cleanliness theory” doesn’t work – or allergies would have exploded in the 1950s