Asthma: A Persistent Threat

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 (Deborah Svoboda)

Twenty-five million Americans -- including 1 in 10 children -- have asthma, according to the Centers for Disease Control. But even as treatments for asthma have improved, total numbers of those affected by the chronic disease haven't declined over the past decade. Today we take a look at why asthma is so hard to defeat, and what the latest research suggests as a way forward.


Andrew McClintock Greenberg, pulmonologist, Sutter Health, Alta Bates Summit Medical Center

Homer Boushey, professor of medicine, UCSF Medical Center

Peg Strub, chief of allergy at Kaiser Permanente Medical Center San Francisco; a clinical professor at UCSF