5 Vaccines; vaccine adjuvants; medical, biological, and pharmaceutical preparations for medical use, namely, preparations containing messenger RNA for preventing and treating viruses and respiratory disorders; mRNA-based therapeutics and therapeutic agents for in vivo, ex vivo, or in situ prevention and treatment of viruses and respiratory disorders; lipid nanoparticles for use as drug delivery carriers sold as an integral component of pharmaceutical preparations for intracellular delivery of self-amplifying messenger RNA (sa-mRNA) for preventing and treating viral diseases all for pharmaceutical, medical or medical diagnostic purposes; drug carriers for medical use, namely, drug delivery agents consisting of lipid nanoparticles that facilitate delivery of a wide range of pharmaceuticals; lipid nanoparticles for drug delivery sold as an integral component of drugs; pharmaceutical preparations, namely, messenger RNA and delivery agents comprised of lipid nanoparticle carriers and polymers for the delivery of mRNA to human cells