Study on the prevalence of allergic respiratory diseases in schoolchildren
between six and seven years old, associated with indicators of air pollution. A
questionnaire based on the International Study of Asthma and Allergies in
Childhood was administered to parents of students from public schools, located
in urban areas with differing vehicle flows. There was a positive correlation
between monthly frequency of rhinitis and concentration of pollutants, and
negative with relative air humidity. Even with levels of air pollutants below
that allowed by law, the prevalence of asthma, rhinitis and associated symptoms
tended to be higher in the central region school, where there is heavy vehicular
traffic.
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