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Two American universities have developed a vaccine-filled graft for people who are afraid of injecting a needle, which has been shown to be better and more effective than a needle vaccine in an initial trial.

Stanford University and the University of North Carolina Chapel Hill have developed a sticker-like patch with many fine needles. When they are applied to the skin, the vaccine in the needles is injected into the skin, thus completing the vaccination process.

One of the benefits of this is that the skin contains immune cells that are usually the target of the vaccine. This method is many times better than the traditional vaccine, which is usually given in the arm. Details are published in the Proceedings of the National Academy of Sciences.
Interestingly, it has been completely extracted from a 3D printer with fine needles inserted into a polymer piece the size of a stamp. This reduces needle pain and allows a large number of people to be vaccinated with a vaccine or other medicine very quickly.

“Thanks to this technology, people around the world can be vaccinated with low, medium or high doses. It does not require special skills and the fear of needles goes away. Even the patient himself can use it, “said Professor Joseph D. Simon, who led the study.

Another important aspect of this invention is that the number of needles and the amount of food can be increased or decreased, while the same security benefits can be obtained even in small amounts because the cells present in the skin are very active in security. They can be vaccinated against flu, measles, mumps, and hepatitis by making a variety of grafts from a 3D printer.