This book has been written keeping a student?s, a teacher?s and an examiner?s perspective in mind. Each chapter divided into topics and sub-topics, Theory and MCQs arranged section-wise for more comprehensive understanding of topics. In Theory, Important previous years MCQs highlighted (asQ) and MUST-KNOW facts given separately. Book includes PG Entrance Examination MCQs of AIIMS (1991-2019), AIPGME/DNB/NEET-PG (1991-2012 and NEET PG Pattern MCQs (2012-2025) with referenced, authenticated, full explanatory answers. Solved explanatory MCQs from PGI, JIPMER PG Entrance Examinations (2000-2019), INI-CET (2020-25) added to help students grasp subject better. Over 3000 solved MCQs from UPSC CMS & Several State Medical PG Entrance Examinations (Rajasthan, MP, Andhra Pradesh, Tamil Nadu, Maharashtra, Bihar, DNB, JIPMER, Kolkata, and Karnataka PGMEE) added for wider coverage. Recent most changes in National Health Programs with updates in Communicable and Non-communicable diseases have been provided for competitive edge. Many answers are followed by a section on ?Also Remember?- A compilation of various important noteworthy points based on previous questions from several fields. PYQs (Chapter-wise) have been included for a quick revision just before the examination. Several Annexures (Incubation period and Modes of transmission of diseases, Important days of Public Health, Instruments of importance in public health, Important health legislations and programs in India, Vectors, NHP 2017 & NPP 2000, BMW Guidelines 2018, Updated Public Health related statistics of India) have been included towards the start of the book to given the student an edge over others.