This book “FAQs on Vaccines and Immunization Practices” is designed to contribute accurate, authoritative information about the subject matter in question. This book gives a major resource to vaccine providers in using vaccines. It is dedicated to answer the practical questions on recommended vaccines and schedules, indications, contraindications, and precautions. It tries to answer questions relevant to particular clinical situations, which may not be easily answered from reading existing recommendations. Use of this textbook, will help you to minimize the probability of vaccine-preventable diseases in the populations you serve, while maximizing the safe use of those vaccines. Almost all the features relevant to pediatric vaccination today are covered in depth. The book contains six sections. The first section covers the general vaccination like vaccine immunology, vaccination schedules, adolescent immunization etc. And section 2 and section 3 discuss about the EPI and Non-EPI vaccines like polio, measles, varicella, rabies etc. Section 4 aims to overview about dengue, malaria, Alzheimer’s disease etc. Section 5 and section 6 emphasis on the novel approach to vaccine formulations and therapeutic vaccines.