The book The Health Surveillance Process in Brazil is a book that describes all the fundamental points of health surveillance. This book began to be developed in 2023, in this book you will find the legal bases of surveillance and the basic description of the most complex public health system in the world. What helped me in the development of this book were some academic inconsistencies in scientific works already published and I believe that this book will help other health professionals to understand how the health and disease process works in my country