Today I use to see children playing carelessly in a dirty environment where bacteria are found in a huge quantity. Most of them are being trained and brought up in a very poor family that knows nothing about the well being of a growing child.
In many countries we seem to have gone to the other extreme: sterilized environments! Some dirt is apparently good for kids. Contaminated water, however, is universally bad!
The "Hygience Hypothesis": https://www.everydayhealth.com/allergies/cleaning-and-allergies.aspx
Lets housekeepers off the hook ;))
😄