As the subject is growing, so is the transition in the book. As per the title, many recent advances in the field of community medicine have been updated and the out-dated topics are deleted. New major topics included are—Anemia Mukt Bharat, Assessment of Iodine Deficiency Disorders, Health Insurance Schemes, National Guidelines on ART in Adults and Adolescents, HIV and Hepatitis Coinfection, Epidemiology of Suicide, Women’s Empowerment, Community Psychiatry, Tribal Health, Universal Health Coverage, Initiates by Government of India for Child Health Promotion, Poshan Abhiyaan, COVID-19, National Action Plan Combating Viral Hepatitis in India, National Viral Hepatitis Control Programme, Child Welfare Policies Legislations and Programs, Transplantation of Human Organs and Tissues Act 2020, Community Development Programs, Rural Development Schemes, Indian Public Health Standards for Sub-centers and Viral Hemorrhagic Fever Diseases. New small topics incorporated are—Digi Health, National Digital Health Mission, Holistic Health, Iceberg of Health, Refugee Health, Bellagio Declaration, Jakarta Declaration, HIV Self-testing, India Hypertension Control Initiative, WASH in Schools, Epidemiological Transition, Population Genetics, Gene Therapy, Journey of First Thousand Days, Elder Abuse, Geriatric Counseling, Primary Mental Health Care, Public People Private Partnership, Health Information Technology, Poverty Alleviation Programs, Protection of Children from Sexual Offences Act, Polio Endgame Strategy, Fly Belt, MTP Amendment Bill – 2020 and Human African Trypanosomiasis. Focus is given on verbal autopsy, healthcare-associated infections, first and second line ARV regimens, postexposure prophylaxis for HIV, prophylaxis for opportunistic infections, approaches for cancer prevention, and cancer registry. Bhore Committee report, national guidelines on infant and young child feeding, revised MCP card maternal mortality audit, sentinel surveillance, and PCPNDT Act – 1994.