I'm worried about my baby She is crawling around on the floor and putting all sorts ofthings into her mouth.
Don't worry. Children who live in spotlessly clean houses do not have much exposure to bacteria, so their immune systems don't getthe practice offighting bacteria. Research shows that children living in houses that are not spotlessly clean, who have contact with animals and faecal matter, get fewer illnesses than children living in spotless homes.And there's evidence that children who live with pets get fewer allergies.