Several types of nanoparticles are utilized in vaccine development:
Lipid Nanoparticles: These are used to encapsulate mRNA, as seen in some COVID-19 vaccines, aiding in the delivery and stability of the mRNA. Polymeric Nanoparticles: These can deliver antigens and adjuvants effectively, enhancing the immune response. Metallic Nanoparticles: Gold and silver nanoparticles can be used to enhance the immune response by acting as adjuvants.