Mosquitoes recently a big problem all over the world, but especially in the regions where these insects bites can lead to infection deadly disease.I recently wrote about a successful experiment on two islands Chinese province of Guangdong, where almost completely exterminated the population of one of the most invasive species of mosquito. Through genetic engineering could then destroy 94% of females of Asian mosquito tiger – specially bred females are sterilized by low doses of radiation, and males by the bacterium Wolbachia, and then released into the wild at the top of the breeding season 2016 and 2017 years on two islands around Guangzhou. The results proved to be impressive, because females have disappeared almost completely, and says Peter Armbruster, an ecologist dealing with this topic, is the most effective in the history of an attempt to reduce the amount of tiger mosquitoes, which are famous for their incredible survival. Practically do not respond to conventional methods of controlling quantities and are very invasive, because over the last 40 years, they have hit Asia on virtually every continent, and must be remembered that their presence brings with it serious health risks because They carry many deadly diseases like malaria and dengue.However, as shown by the case of Brazil, this method is not always effective – during long-term tests around the city of Jacobina were released modified male mosquito Egypt, which after pairing with wild mosquitos had drastically reduce the amount of them offspring, in addition, it would be too weak, to even survive. On paper it sounded all logical and would lead to a reduction in the amount of mosquitoes in the region of 85%, thereby reducing the dengue infection, Zika, yellow fever or malaria. Sorry, something went wrong and how scientists have discovered just of Yale University, now the population of mosquitoes returned to pre-treatment, and for that … the mosquitoes are stronger than ever, because they carry the genes modified mosquito by scientists. According to one of them – argued that genes modified mosquitoes do not get into the wild population, because the offspring will be too weak to live. Of course, it has become quite different.During tests lasting 27 months, were released every week on freedom of approx. 450,000 males modified, giving a total of tens of millions of insects. To have comparative material, the researchers carefully examined the genomes of genetically modified and wild animals. For the first time before the start of the test, and then 12, 27 and 30 months of initiation. As a result, we know that, although actually decreased the ability of mosquitoes to issue offspring, that it was stronger than expected and partly capable of further reproduction, which led to mixing genomes. Moreover, as we already know the population of mosquitoes actually it decreased initially, but it was enough 18 months to come back to normal, and what is worse, it seems that mosquitoes are now even more difficult to eradicate than before. Firstly, there is a resilient mix, and for that females are now able to sense the modified males and do not want them to evaporate! And while researchers ensure that this new blend does not increase risk to people, and so it is not something to be glad because he seemed to have lost the most effective weapon in the fight against the mosquito plague.