Article: Assessment of respiratory symptoms and asthma prevalence in a U.S.-Mexico border region.

ASTHMA is currently 1 of the most prevalent chronic diseases affecting children in the United States. Reported asthma prevalence worldwide varies widely--from less than 5% to more than 20%--depending on the definition and method used, and the population studied. (1-7) Currently, substantial evidence exists that asthma prevalence is increasing in industrialized societies--especially among children and minorities. Asthma, as is the case with many other health conditions, apparently exerts its greatest impact on minorities, especially residents of inner-city areas. (8-14)

The National Health and Nutrition Examination Survey (NHANES) in the United States has found ...

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