A painless flu vaccination technique was being developed by spraying viral genes directly through the skin. The vaccines are DNA-based. A few genes from the DNA of the flu virus are used to make a vaccine the process of which is faster and safer. The vaccine is shot at the skin using a needle-free device. The DNA that gets in contact with the skin cells produces the strong immune response.
This technique is envisioned to replace the traditional methods of developing flu vaccines wherein chicken eggs are used. The old method takes too long. With the new method, an outbreak may be prevented if suitable vaccines are developed at a shorter time, and are administered to patients before its too late.
