PEDIATRICS Vol. 31 No. 1 January 1963, pp. 134-143
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EPIDEMIOLOGY OF ASTHMA IN CHILDREN, WITH PARTICULAR REFERENCE TO WIND SPEED AND WIND DIRECTION

Guy René Newell Jr. M.D.1 and Lida Inge Swafford M.D.2

1 The Department of Pediatrics, Tulane University School of Medicine, New Orleans, Louisiana
2 The Department of Tropical Medicine and Public Health, Tulane University School of Medicine, New Orleans, Louisiana

There are many reports relating air pollution to asthma. Specific agents have been implicated, although not always concretely demonstrated. This study of 2,400 pediatric emergency visits for asthma compares its epidemiology in children and adults, particularly as to effects associated with wind speed and wind direction.

Outbreaks of asthma in children were not nearly as conspicuously related to wind speed and direction as were those in adults. The severity of attacks, as judged by emergency visits for relief, increased in the fall and fell off during the summer. More boys than girls were affected; the frequency of visits gradually built up with age, except for a drop at the immediate prepubertal ages, followed by a sharp peak at age 14 years. Thus "duration of exposure" could not be clearly related to the frequency of attacks. These observations have raised questions and speculations which we hope will lead to further studies.

Submitted on April 6, 1962
Accepted on June 26, 1962




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