Scientists have managed to develop a mosquito, also known as flying vaccinator, which is genetically engineered to vaccinate while it bites. This method will help in tackling malaria in a better way, as compared to the method of altering the genes of male mosquitoes in order to make them infertile. The process allows a mass delivery of vaccines through biting insects.

Professor Shigeto Yoshida, of Jichi Medical University in Japan said, "Following bites, protective immune responses are induced, just like a conventional vaccination, but with no pain and no cost".

He shared that this way, the insects will not act as pests anymore and will prove beneficial to the whole humanity. The continuous exposure to bites will be able to maintain high levels of protective immunity, for the whole life.

In order to tackle leishmania, the anopheles mosquito was modified to carry a vaccine against the ghastly disease which is spread by sand flies causing painful sores, fever as well as weight loss. If left untreated, the patients may die.

Prof. Yoshida also adds that release of vaccines via biting insects may raise ethical objections.