Abstract Current attempts in vaccine delivery systems concentrate on replicating the natural dissemination of live pathogens. but neglect that pathogens evolve to evade the immune system rather than to provoke it. In the case of enveloped RNA viruses. it is the natural dissemination of nucleocapsid protein (NP. https://countryscenesaddleryandpetsuppliers.shop/product-category/d-bit/