[The effect of air pollution factors on the frequency of acute laryngotracheitis in children].

The authors investigated 325 children with acute laryngotracheitis. The frequency of the disease in 1986 was correlated with the three most frequent factors of atmospheric contamination, dust, sulphur dioxide and nitrogen oxides. The author found a significant increase of the morbidity from laryngotracheitis in conjunction with a greater contamination of the atmosphere.