Abstract
Asthma is a chronic disease affecting nearly 10 million persons1 and leading to 500,000 hospitalizations annually.2 During the 1980s, mortality from asthma in the United States increased by 6% per year.3 Weiss et al3,4 previously noted that Cook County, Illinois has one of the highest mortality rates from asthma in the country, with most of the deaths occurring within the city of Chicago. Several studies have found that asthma mortality and hospitalization rates in general are greater among nonwhites5,6 and persons with low income,7,8 with possible explanations for the racial and socioeconomic differences in asthma rates including differential access to care, exposure to environmental pollutants, and crowded conditions leading to increased exposure to allergens and infections.
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