[Passive smoking as a risk factor for allergic diseases in children].

The authors examined anamnestically, by interdermal tests with tobacco extract, by assessment of serum IgE and thiocyanates in saliva (according to David and Densen) 234 children with allergic diseases (rhinitis pollinosa, asthma bronchiale, dermorespiratory syndrome). They revealed a high ratio of positive tests in passive smokers (71.8% of the tested children), as compared with children not exposed to smoking (16.