The fourth edition aims to fulfil the long-standing need of the medical students for a concise textbook of community medicine, which makes it an easy and interesting reading, in lucid and simple English. Contributed by 21 eminent teachers, who are Deans / Head of Departments / Professors / Senior faculty teachers from various prestigious medical colleges in India, it comprehensively covers all the required topics, explaining the concepts at length and stimulates analytical thinking. The book seeks to encourage students to approach the subject with scientific logic and apply the learned concepts appropriately in the future during his/her professional career. Key features Critical concepts and definitions have been explained at length in a simple and easy-to-understand language Comprehensive coverage of the entire curriculum, including CBME- 2019, through 130 chapters Liberal use is made of appropriate examples and diagrams to explain various concepts of community medicine Equal emphasis laid on the applied aspects so that a student is confident in applying the basic concepts and in answering applicationbased / problem-based questions, which are appearing increasingly in the examinations across the country, not only for the MBBS Professional Examinations but also for NEET-PG examination Latest statistics pertaining to India on various policies, programs, guidelines, and surveys are provided All communicable and non-communicable diseases are discussed in the Indian scenario with latest data Tables and flow charts wherever necessary for understanding and retention have been added The text is supplemented with text boxes which provide extra but important information MCQs which comprehensively cover the text have been added at the end of each chapter to allow students to test their grasp of topics dealt within each chapter. The only textbook in Community Medicine which contains nearly 2,000 MCQs and Review Exercises Highlights of the fourth edition The fourth edition has further built upon the strengths and contents of the third edition, as follows: Complete coverage of CBME - 2019 curriculum Content of all the chapters has been appropriately revised / updated so as to bring them in sync with the CBME-2019 as well as NEET-PG examination All national and international health and disease data, policies, and health guidelines fully revised and updated till February 2021 New/enlarged sections on medico-social case taking and family folder, and steps in organizing a health education programme All National Health Programs updated till February 2021 and included along with individual diseases rather than a separate chapter on Health Programs to give better correlation Health-related laws updated till February 2021 NEW CHAPTERS have been added on the following topics: COVID-19 Newly Emerging and Re-emerging Diseases Healthcare Acquired / Hospital Acquired Infections (HAIs) Pandemic Management Chronic Respiratory Diseases Computers in Epidemiology and Digital Health (E-Health) Tribal Health Emergency and Critical Care Services in Primary Health Care Ethics, Spirituality, Communication, and Doctor-Patient Relationship in Health Fundamental Principles of Health Research Methodology, Developing the Research Question, and Basics of Quantification and Sampling Practice question paper on the lines of USMLE / NEET - PG, along with their answers (and explanations to the answers) (introduced as Appendix-I) All the latest health related data which a student needs to know has been updated and placed in the form of revision table, in Appendix -II Within the existing chapters, the following NEW TOPICS have been introduced: National physical fitness protocol Revised guidelines on nutritional requirements from National Institute of Nutrition PM-JAY, Ayushman Bharat and Health & Wellness Centers Scheme The NMC Act, Epidemics Act, NDM Act (in context of COVID-19), Clinical Establishments Act and Transplantation of Human Organs