Robin Marantz Henig

Should you get a flu shot? We hear from Robin Marantz Henig, author of a book about viruses "A Dancing Matrix," and Dr. W. Paul Glezer, epidemiologist at the Influenza Research Center at Baylor College of Medicine.

Medical writer Robin Marantz Henig is a frequent contributor to The New York Times Magazine, the Washington Post, Mirabella, and Vogue. Her new book, "A Dancing Matrix" is about the work being done to understand viruses. The field has taken on new urgency since the spread of the AIDS virus. Hening says scientists have realized that emergence of a new virus is not as rare as previously though, and that it's caused mostly by human error rather than genetic mutation.