This book attempts to understand the significance of public health and its focus and implementation in global and national policies. The practices and methods of public health professionals in monitoring and diagnosing health concerns is delved into with discussions on their methodology. The need for public health campaigns that include, but are not restricted to, vaccinations and control of infectious diseases, motor safety, safer workplaces and safer drinking water and healthier food are glanced at and provide a backbone for similar ideas that any reader would like to undertake.