It is both an honor and pleasure to have been appointed as the Editor-in-Chief of the journal Virologica Sinica from this volume. Professor Xinwen CHEN, who has dedicated to serve the journal as the Editor-in-Chief for 15 years, concluded his term of service in the last volume. I would like to thank Prof.
Received: 27 Feb 2017 Accepted: 27 Feb 2017
Published online: 27 Feb 2017