"MIT researchers have designed a mobile vaccine printer that could be scaled up to produce hundreds of vaccine doses in a day. This kind of printer, which can fit on a tabletop, could be deployed anywhere vaccines are needed. The printer generates vaccine-filled microneedle patches that can be stored long-term at room temperature and applied to the skin. The patch can be attached to the skin, allowing the vaccine to dissolve without the need for a traditional injection. In a study that was published in Nature Biotechnology on April 24, 2023, the researchers showed they could use the printer to produce thermostable Covid-19 RNA vaccines that could induce a comparable immune response to that generated by injected RNA vaccines, in mice. The “ink” that the researchers use to print the vaccine-containing microneedles includes RNA vaccine molecules that are encapsulated in lipid nanoparticles, which help them to remain stable for long periods of time.

While this study focused on Covid-19 RNA vaccines, the researchers plan to adapt the process to produce other types of vaccines, including vaccines made from proteins or inactivated viruses."

https://scitechdaily.com/mits-vaccine-printer-the-game-changer-in-vaccine-distribution/