The objective of primary health care is easily accessible health care facilities for all. It also tries to ensure clean and improved environment to prevent health hazards. The aim to deliver better facilities without discrimination has been prevailing ever since the dawn of globalization; but there is a vast gap between demand and supply. This book is a compilation of chapters that discuss the most vital concepts and emerging trends in this field. The readers would gain knowledge that would broaden their perspective about primary health care. Such selected concepts that redefine this field have been presented herein. Different approaches, evaluations, methodologies and advanced studies in the sector of primary healthcare have also been included in this book.