discusses how nanotechnology aids in overcoming the existing traditional approaches in combating diseases. It explores the emerging trends of using nanoparticles for nanotherapeutics and nanotheranostics and their role in the efficient diagnosis and treatment for infectious microbial diseases. The book opens with an introduction and overview of nanotherapeutics. This section also covers nanotherapeutic impregnated medical devices, nanotherapeutics as vaccines, and related regulatory requirements. It goes on to discuss the application of nanotherapeutics and nanotheranostics in diagnosing and treating specific infectious diseases: bacterial infections, viral infections, fungal infestations, parasitic infestations, and other infectious conditions. With chapter contributions from experts in the fields, offers a comprehensive reference for researchers, scientists, and industry professionals working on infectious diseases and the application of nanoparticles to effectively diagnose, treat, and manage them.