AbstractThis Dr Cochrane clinical vignette is based on upon an Overview of Cochrane Reviews that was published in a previous issue of Evidence‐Based Child Health: Foisy M, Martin B, Domino F, Becker, L A. The Cochrane Library and the Treatment of Sore Throat in Children and Adolescents: An Overview of Reviews. Evid‐Based Child Health 2011, 6: 6(3): 810–823; and inspired by: Marcy SM. When a parent insists on antibiotics for a virus. Am Fam Physician 1999; 59(3): 687–688.Dr Cochrane is a unique self‐learning experience—the integration of Cochrane evidence with a quirky fictional story and multiple‐choice questions provides readers with the opportunity to explore and understand the applicability of a Cochrane Review or Overview in a new way.In this series of fictional clinical vignettes, Dr Cochrane travels across time from the past century to the present day, to solve clinical problems using evidence from Cochrane Reviews. Read the associated article and then test your knowledge with five multiple‐choice questions. You can find the answers to the questions on page 1316. Copyright © 2011 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd. The Cochrane Collaboration