<img src='https://i.cbc.ca/1.4637026.1524772406!/cpImage/httpImage/image.jpg_gen/derivatives/16x9_460/asthma-decline.jpg' alt='Asthma Decline' width='460' title='FILE - In this July 26, 2012 file photo, U.S. swimmer Shannon Vreeland uses an inhaler during a practice session at the Aquatics Center at Olympic Park ahead of the 2012 Summer Olympics, in London. A new survey suggests asthma in the U.S. may finally be on the decline, according to the findings from a large national health survey conducted in 2013. The report was released by the centers for Disease Control and Prevention. (AP Photo/, File)' height='259' /> Despite a decrease in hospitalizations, asthma continues to be one of the leading causes of hospital stays for people younger than 20.