**Section 5** Epstein-Barr Virus **95 Chapter 6 97** The Role of the Epstein-Barr Virus Lytic Cycle in Tumor Progression: Consequences in Diagnosis and Therapy *by Emmanuel Drouet*

Preface

The relationship between herpesviruses and humans probably dates from thousands of years ago. In the last few decades, many aspects of herpesvirus infections have been understood, such as infections with a severe outcome to mild or subclinical manifestations. Herpesvirus can remain latent during a lifetime and sometimes their reactivation can cause different clinical features in the patient. Several conditions have been related to herpesvirus reactivation such as complications in transplant organ recipients and immune regulatory modification in the elderly. In this book, aspects of human herpesvirus simples, varicella-zoster virus, and cytomega-

As the editor, I thank all of the authors for their contribution to this book and the sharing of their experience on herpesvirus infections with researchers, physicians, other professionals, and students around the world. I thank you for your hard work.

To my colleagues at the Federal University of Jequitinhonha and Mucuri Valleys and others whom, during my life, have contributed to scientific insights and/or friendship, you have molded my ethos and professional features. To my wife Fabiana and my children Helena and Miguel for inspirations of the soul and my lovely life. I love you all. To my parents Tereza and Osvaldo (*in memorial*) for education given at the dawn of my life and all other relatives and friends. Finally, I thank Mrs. Lada Bozic

**Ronaldo Luis Thomasini PhD, MSc, BSc.**

Federal University of Jequitinhonha and Mucuri Valleys,

Faculty of Medicine of Diamantina,

Professor,

Brazil

lovirus have been presented and discussed by our eminent colleagues.

for her assistance in turning this publication in to a 'real dream'.

Thank you all.
