Summary of an article about mosquitoes from BBC.

For humans, one of the most dangerous threats is the mosquito. They carry several diseases by sucking human blood from one to another. Around half of the people in the world are affected the insects. This article shows three main points.

To begin with, there are many species of mosquitoes all over the world. The number is approximately 3,500. 6% of mosquitoes are females which draw human blood in order to take care of their eggs, and half of the mosquitoes bring infectious diseases to humans. Some diseases carried by the small insects are deadly, for instance yellow fever, and dengue fever. This article lists three principle species possessing such diseases, namely Aedes aegypti, Aedes albopictus and Anopheles gambiae.

A number of scientists have tried to eradicate mosquitoes. One utilized 30 types of pesticides and others modified the insect's genes to make them sterile, reducing the number of mosquitoes by more than 90% in a few certain local areas. However, it is sometimes argued that there could be side effects of the eradication. Although mosquitoes are extremely hated by humans, they play an important role in the food chain. If they were extinct, the ecosystem would change.

Finally, the article introduces two promising measures. One is a machine to detect and discern species which are capable of transmitting a serious virus(or capable of infecting humans). Another is that of altering the gene of mosquitoes which make them resistant against parasites.

お疲れ様でした！I only made changes to words that are better for academic papers.