Mosquito is the main hazard is the spread of disease. According to the study, the spread of mosquito diseases up to more than 80 kinds of. On earth, there are no animals that are more harmful to humans than mosquitoes.

　　This disease is caused by malaria infected mosquitoes. Also called malaria malaria. According to the investigation of the health department in 1935, in miasma prevailed in the region, residents in the blood parasite accounted for 50% of the suffering from malignant malaria accounted for 72%. In 1936, Gao county, Jiangsu, suffering from malaria death about 20000 people, 1876 digging the Panama Canal had for yellow fever and malaria original dead countless workers that 1889 not shutdown last resort. After solving the problem of mosquito entomologist was able to continue to complete the canal engineering. 1930 East Tropical Medicine Institute report pointed out: Thailand Hukou die each year about 50 people died of malaria, up to fifty thousand people.

　　How does the mosquito spread the pathogen to the human body? When mosquitoes suck blood of patients suffering from malaria, also the malaria (malaria disease) in vivo. They bite again, and malaria parasites from the mosquito bitten mouth into the body. Ten days later, the parasite begins to appear in the blood vessels that are close to the skin. They breed in the patient's red blood cells and split into a large number of small protozoa. These small protozoa damage red blood cells and release a toxin. Each small plasmodia and invasion into the other red blood cells and continue to breed, make the sick human Plasmodium and more and more toxins, cause patients with chills and fever. With malaria first cold, shivering body, but the body temperature test temperature is high. About after an hour, the patient felt fever, when the temperature continues to rise, three or four hours began sweating, body temperature decreased, in a few hours the patient feel relaxed, disease like in the past, in fact, when small protozoa has invaded new red blood cells, and begin to reproduce. When the parasite again destroys red blood cells, the patient is in the form of second rounds. Unless appropriate treatment is obtained, this attack will continue to be a regular and painful one. Malaria is caused by human loss is quite large, with weak, low working efficiency, will be a serious loss of life. The drug has the treatment and prevention of the disease, but the best way is to eliminate mosquitoes spread the disease malaria - abortion.

　　Epidemic encephalitis B (this is a caused by viral acute infectious disease), but also by mosquitoes pass band, the disease is also called Japanese B encephalitis, ordinary all the it is called brain inflammation. Patients have a fever, headache, vomiting, convulsions, drowsiness, coma and other phenomena. There was no effect on the treatment of drugs, so the mortality rate is quite high.

　　Mosquitoes suck with the virus of human or animal blood, after a considerable period of time has the infection, the bite has no immunity to the person can make bite onset. This kind of infectious disease called mosquito Culex and aedes. The incidence and prevalence of the disease prevention and treatment in addition to vaccination, prevention and cure infection, we must vigorously carry out anti mosquito eradication, spread. In addition, Culex and Anopheles also spread filariasis (elephantiasis).

　　Our country can spread the disease mosquito can be divided into three categories: a class name called Anopheles, which spread malaria mosquitoes. According to incomplete statistics, in 1929 1 years, the world malaria caused the death of about 2 million people. Another class called Culex, the main transmission of filariasis and epidemic encephalitis B. The third category called Aedes, with black and white markings on the body, also called the mosquito, the main epidemic type B encephalitis and dengue fever.

　　In a suitable environment in the summer, the female mosquito eggs in the water, one or two days after hatch into larvae, called larvae. After the four molting larvae after pupa, pupa to two or three days in water, can become the emergence of mosquitoes. Complete a generation of development about as long as 12 - 10 days, one year can breed seven or eight generations.

　　Scientists from the very early previously discovered carbon dioxide mosquito has a strong attraction, however, is only the CO2 could not explain all the problems, due to the fact that after all mosquitoes love bites people's arms and legs. Therefore, the role of carbon dioxide is not to be ignored, but the skin will also release the other mosquitoes more full of temptation.

　　Scientists found that mosquitoes mixture of some of the reaction is very violent, in their experimental 346 kind of matter has three special chemical substances mixed in the experiment every time to attract 90% of mosquitoes. And Bernier found that his own arm and hand only attracted 7 mosquitoes. "And there are times when the 30 kinds of material mixed with mosquitoes are not attracted," Bernier said. However, in this experiment, scientists have not found any attractant can attract mosquitoes 100%.

　　Researchers have also found that a mixture of similar people's taste is more attractive to mosquitoes. But it's far from making a better lure. Because the attractant must than in it in the vicinity of the human body to mosquitoes more attractive to achieve the desired effect, Bernier, who said "close to the body is very difficult a thing, we now is unable to do so."

　　Eliminating mosquitoes is the key to ensure the health of people and avoid the spread of the disease. Mosquito -

　　After the birth of eggs, larvae (Jie Jue), pupa, adult four periods. Mosquitoes like to produce eggs.

　　Water, such as a small river, rain puddles, reservoirs, ponds, paddy fields and mountain streams such as; in the warm season, eggs for about three days can hatch as larvae and began to draft in minimal growth of microorganism and protozoa. They are close to the surface of the water sucking air by two holes at the tail end of the body. After the larvae molt, finally stop eating, decreasing the activity into pupa. About two or three days later, went to the water shed and peeled pupa emergence as adults (mosquitoes fly out). Male and female mating mostly in the early morning or evening, first male mosquitoes around the bushes roof, roof, window, or open in droves to fly, the female mosquito spotted the opportunity to join the team, on the fly soon to mate. Male mosquito only grass juice, nectar live, do not suck blood. The mosquito must suck blood after mating (human or animal blood) eggs to mature, so the only female mosquitoes can spread disease. The female mosquito full absorption of blood producing bases, life can spawn six to eight times, 200-300 capsules each time, so early eradication a mosquito, equal to eliminate hundreds, thousands of. It is important to know the life history and breeding sites of mosquitoes. We can apply this knowledge to the mosquito. Mosquito larvae most easily extinguished, because larvae must be living in the water, such as to fill the lowland, divert water, regular cleaning water of blood, larvae have no place to live, the mosquito will receive good results.

　　Dusk mosquitoes began to fly inside, so that the best killing effect. And the inside corner of a wall, ceiling, the bed and the seat behind, mosquito favorite hiding place. Therefore, aerosol spray to pay special attention to.