debodun
SF VIP
- Location
- way upstate in New York, USA
Maybe diseases are becoming more virulent because we clean our environments too much. We have no immunity to germs. In the 1800, polio affected the more well-off people because they had better hygiene and could afford cleaning products and took more trouble to clean. The poorer people had less sickness because they were exposed to more dirt and germs and thereby had stronger immunity.