Asthma hospitalizations peak 17 days after Labor Day , studies show . Outdoor and indoor allergens can work together to create `` perfect storm '' for asthma . " Schools across the United States contain a number of potential respiratory allergens , including mold , dust mites , pet dander and , in some cases , cockroaches and mice . Comment: I'm not sure
Asthma hospitalizations peak 17 days after Labor Day , studies show . Outdoor and indoor allergens can work together to create `` perfect storm '' for asthma . " Comment: I'm not sure