The average person gets two to four colds a year. With all the missed school and work, that adds up to an economic impact of about $40 billion, according to some studies. So why haven’t we cured the common cold yet? CNN Medical Correspondent Meg Tirrell explores the science, the history, and the modern attempts to finally crack the case. Producer: Jesse Remedios Medical Writer: Andrea Kane Showrunner: Amanda Sealy Senior Producer: Dan Bloom Technical Director: Dan Dzula Executive Producer: Steve Lickteig Learn more about your ad choices. Visit podcastchoices.com/adchoices