The importance of vaccines to combat bacterial diseases cannot be overstated. Methods used in the development and testing of these vaccines are evolving rapidly as a direct consequence of the availability of advanced technologies. This volume will cover methods developed in the last decade, the usage of which are enabling the development of cheaper, cost-effective and structurally stable vaccines for global use. Chapters cover in silico analytical methods such as reverse vaccinology and machine learning; low-energy electron irradiation for the generation of inactivated bacterial vaccines; methods for assessment of OMV/GMMA quality and stability; and controlled human infection models. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls.