Public health students at all levels need to understand the biological basis for public health. New understandings of genetics, immunology, and brain function require basic knowledge of biology. New preventive, diagnostic, and therapeutic technologies cannot be successfully applied without a comprehension of the underlying biology. Essentials of Public Health Biology starts by introducing students to basic concepts of cellular biology, immunology, and physiology which are key to appreciating the connections between biology and public health. The authors build on these concepts to discuss the biological aspects of important public health problems from communicable diseases and non-communicable diseases to aging, nutrition, environmental exposures, and injuries. Key Features: ? Organized into three sections including fundamental concepts, applications, and connecting the science and public health ? Examines fundamental biologic concepts of the disease process as they relate to important communicable and noncommunicable diseases observed globally in public health ?