CORRECTION: A previous version of this story incorrectly said that David Strachan is an American immunologist. Strachan is a ...

CHICAGO – Research in the Amish and Hutterites sheds new light on asthma. Those farming-based religious groups shun modern ways and are similar genetically. But asthma is uncommon in Amish ...

Blood samples, house dust and mice experiments revealed some tantalizing clues, suggesting something in the dust was protecting the Amish children.