Asthma in the U.S.
http://www.cdc.gov/VitalSigns/pdf/2011-05-vitalsigns.pdf
Reports that the number of people diagnosed with asthma grew by 4.3 million from 2001 to 2009 and that the rate of increase was highest (50%) among African-American children. Describes asthma trends, costs, and what can be done. From the Centers for Disease Control and Prevention
