Mosquitoes can be genetically engineered to stop them spreading dengue fever to humans, a study has revealed.
Working in a lab, scientists created mosquitoes which were immune to the tropical disease and therefore unable to pass it on through bites.
They injected the insects with human immune system proteins which were able to fight off all four strains of dengue.
These proteins stopped the virus from multiplying inside the mosquito, meaning it never became strong enough to be transmitted.
Dengue threatens the health and Dai_ly_cua_luoi_chong_muoi_An_Giang lives of millions of people living in hot countries every year, and can cause fever, vomiting and deadly bleeding.
The scientists' process worked by injecting immune system proteins called antibodies into the mosquitoes.
These would then spread through the body and, in theory, to the mosquitoes' offspring to make them all resistant to dengue viruses and unable to spread them
Aedes aegypti mosquitoes are the main transmitter of dengue fever, which infects millions of people per year and leaves around 500,000 needing hospital treatment.
Researchers found a way of making the insects immune to the virus and therefore stopping them passing it on (stock image)
Scientists at the University of California, San Diego, implanted the dengue immune proteins, Https://Bimi.Vn/Dai-Ly-Cua-Luoi-Chong-Muoi/#Dai_Ly_Cua_Luoi_Chong_Muoi_Thai_Binh called antibodies, into female mosquitoes.
Antibodies are created naturally by the body and are what enables the immune system to destroy bacteria and viruses by itself without medical help.
But someone must become infected with, or exposed to, an illness before the body is able to develop them, which is risky with such a deadly disease.
The researchers found putting human dengue antibodies into mosquitoes stopped the disease spreading among the insects.
And by engineering the genes of the insects to make sure those with the antibodies inside them were successful breeders, researchers said it would be possible to make this immunity spread through the wild population of the insects.
Professor Omar Akbari, who led the study, said: 'Once the female mosquito takes in blood, the antibody is activated and expressed - that's the trigger.
'The antibody is able to hinder the replication of the virus and prevent its dissemination throughout the mosquito, which then prevents its transmission to humans.
It's a powerful approach.
'It is fascinating that we now can transfer genes from the human immune system to confer immunity to mosquitoes. For those who have any concerns regarding where and also how to work with https://bimi.vn/dai-ly-cua-luoi-chong-muoi/#Dai_ly_Cua_luoi_chong_muoi_Thai_Binh, you'll be able to email us in the webpage. '
Dr Prasad Paradkar, study co-author, told