A multilayer polyelectrolyte film deposited on a core microparticle or a core nanoparticle, or in the form of a hollow microcapsule or a hollow nanocapsule, wherein said multilayer film comprises an epitope of the RSV M2 protein and an epitope of the RSV G protein , said epitopes consisting of 3 to 120 amino acids, as part of one or more designed polypeptides, wherein a designed polypeptide is a polypeptide consisting of one or more surface absorption regions loaded with at least 8 amino acids covalently linked to the epitope of the RSV M2 protein, the epitope of RSV G protein, or both, that have sufficient charge for stable binding to an opposite charged surface, and wherein the designed polypeptide and the one or more charged surface absorption regions therein they are positively charged or negatively charged, wherein said multilayer film comprises two or more layers. Country of polyelectrolytes, wherein adjacent layers comprise oppositely charged polyelectrolytes, wherein at least one polyelectrolyte of the multilayer film is said one or more polypeptides designed and wherein a polyelectrolyte that is not a polypeptide designed comprises a polycationic material or a Polyanionic material that has a molecular weight of more than 1,000 and at least 5 charges per molecule.Una película de polielectrolitos multicapa depositada sobre una micropartícula núcleo o una nanopartícula núcleo, o en forma de una microcápsula hueca o una nanocápsula hueca, en donde dicha película multicapa comprende un epítopo de la proteína M2 de RSV y un epítopo de la proteína G de RSV, consistiendo dichos epítopos en 3 a 120 aminoácidos, como parte de uno o más polipéptidos diseñados, en donde un polipéptido diseñado es un polipéptido que consiste en una o más regiones de absorción a superficie cargadas de al menos 8 aminoácidos unidos covalentemente al epítopo de la proteína M2 de RSV, el epítopo de la proteína G de RSV, o ambos, que tienen carga suficiente para la unión estable a una superf
