This edition builds on the existing knowledge provided in previous editions by illustrious academicians, experts and medical professionals. There have been several changes that have occurred among nursing practices, health care infrastructure and administration, government health care delivery systems and national & international health goals. To equip nursing students and professionals with relevant information on current practices and policies, the Trained Nurses’ Association of India (TNAI) has entrusted this important task to me. With the support of a group of nursing experts, we have completed the fourth edition in the TNAI Community Health Nursing Manual series.