Current Trends in Vaccine Technologies: Innovations and Challenges

Although vaccination is highly effective in decreasing or eliminating diseases caused by pathogens, there are still certain diseases and new infections that pose intrinsic challenges in the development of effective vaccines.Moreover, the process of creating vaccinations for persons who have weakened immune systems or pre-existing medical disorders poses substantial challenges.Emerging non-viral vaccine technologies offer fresh ways to get beyond the current barriers in vaccine production, in addition to conventional vaccinations such as live attenuated or deactivated vaccines, subunit vaccines, and viral vector vaccines.These technologies include viral-like particles and nanoparticle vaccines, DNA/RNA vaccines, and rational vaccine design.Our understanding of vaccine immunology has been considerably enhanced as a result of these breakthroughs, which have provided essential insights for the creation of vaccines against a wide range of diseases.These vaccines will be effective against a wide range of diseases, including newly developing infectious diseases such as COVID-19 and diseases that have previously shown resistance to vaccination.This chapter presents a complete overview of newly emerging non-viral technologies for vaccine production, as well as an examination of their potential uses in addressing the most critical problems in vaccine development.