His team 's most recent study , accepted for publication in Allergy & Asthma Proceedings , will show that the rate of asthma at the closest elementary school to the World Trade Center ( 29 percent ) is high compared with the rate of asthma in children in the general population . Health survey looked at 9/11 adults 2006-2007 after 46,000 attacks . Adults who were expose to intense dust clouds developed asthma at higher rates . 46,000 Americans have asthma , which causes airway swelling and inflammation .
Health survey looked at 9/11 adults 2006-2007 after 46,000 attacks . Adults who were expose to intense dust clouds developed asthma at higher rates . 46,000 Americans have asthma , which causes airway swelling and inflammation .