Book excerpt: Evolving Landscape of Molecular Diagnostics: Applications and Techniques presents cutting-edge reviews on current and emerging technologies in the diagnosis of microbial infections. The book discusses the fundamentals of Molecular Diagnostics for bacteria, fungi, viruses and a variety of state-of-the-art diagnostics tools and techniques for obtaining qualitative and quantitative results. It includes topics such as Next generation sequencing and application of "OMICS" for early disease diagnosis. Sections cover the entire spectrum of emerging diagnostic tools and techniques, as well as the principles, pros and cons of each method and applications for diagnosis of infectious disease in plants, humans and veterinary. This is a resource for both researchers and students working in clinical microbiology, infectious biology, applied life sciences and scientists working in the clinical diagnostic industry. Provides a wide range of diagnostics tools and technologies in the field of infectious biology Presents discussions on emerging technologies for early disease diagnosis and novel diagnostics techniques for detection of COVID, Urea Breath Tests for Detection of Helicobacter pylori, Loop-Mediated Isothermal Amplification as Point-of-Care Diagnosis, Molecular imaging, Lab-on-a-chip Technologies, and several others Analyzes literature reviews, underpinning methodologies, and opportunities and limitations Includes case studies and examples that highlight applications using the underpinning techniques