Exposure to smokers is still a major cause of asthma attacks in children in the United States, a new survey has found.

Among parents whose children have asthma, 73 percent state that tobacco smoke causes asthma attacks in their children.
And nearly half of parents say their asthmatic child spends time with people who smoke.
Mostly the smoker is the asthmatic child's parent and less often it is another adult, sibling, or the asthmatic child's friend.
Source-ANI