How do mosquitoes transmit diseases? Mosquitoes
In April, many people found that mosquitoes had appeared in their homes "humming". Shen Peiyi, a national vector biological control expert, introduced that the most common Culex mosquito in our country has the habit of overwintering, that is, it has been in a "hibernation" state since last winter. As the temperature rises, these mosquitoes begin to move. As long as the temperature is suitable, they will be hungry and ready to eat, ready to mate and lay eggs.
Ge Quansheng, director of the Hangzhou Municipal Health Affairs Office, said there was some truth to the claim that killing one overwintering mosquito was equivalent to killing 800 "second generation mosquitoes". A mosquito produces about 10 generations on average, and each generation has about 80 eggs. In this way, one overwintering mosquito can produce more than 800 "second generation mosquitoes", so it is most cost-effective to eliminate mosquitoes now.
Overwintering mosquitoes prefer to hide in warm places, such as behind household appliances such as air conditioners and televisions, and in lockers such as wardrobes and cabinets, so when killing mosquitoes, you should pay more attention to these places. But it is useless to just shoot a few mosquitoes to death. The key is to do a good job of cleaning your home. Water is a necessary condition for mosquito breeding, and reducing water sources is the most effective way to prevent mosquitoes. It is usually best to clean up the stagnant water in flower pots, paper cups, and plastic boxes in time. The pots and cans placed in the open air can be placed upside down to drain the sewage near your residence.
Mosquitoes bite people and disturb people's rest and work, which is very disgusting. But the most serious harm of mosquitoes to people is that they can spread a variety of infectious diseases, which we must pay attention to and pay attention to health prevention.
To prevent Japanese encephalitis after being bitten by mosquitoes
Life example: Chen in Shandong Province suffered from B encephalitis after being bitten by mosquitoes. Despite various treatments, he has spent more than 600,000 yuan so far and is still in a coma. In September 2011, after being bitten by mosquitoes, Chen began to have a headache and fever. At first, Chen and his family thought he was suffering from a cold, but within a few days, his condition began to deteriorate and he developed a disorder of consciousness. The family immediately sent him to the hospital. After diagnosis, Chen was suffering from severe B encephalitis.
In the epidemic season of JE, such as children have hot topics, poor spirits, especially sleepiness, we should be highly vigilant against the possibility of JE. Early diagnosis and early treatment can greatly reduce the sequelae of JE.
Mosquito-borne malaria cannot be ignored
Life example: Recently, a man named Dali was bitten by a mosquito, and then he developed repeated symptoms of fever. He couldn't stand it anymore, and he took a few days of medicine to get better. Unexpectedly, a small mosquito defeated the strong man. The doctor reminded that the temperature has risen recently, and mosquitoes have begun to multiply in large numbers, so attention should be paid to preventing malaria caused by mosquito bites.
What other diseases do mosquitoes transmit?
The pathogen of dengue fever is dengue virus, which is an acute arbotic disease transmitted by mosquitoes in the southern coastal areas of our country. The incubation period is generally 2-15 days, and the clinical manifestations are hot topic, headache, severe muscle and joint pain, rash, lymphadenopathy, leukopenia, etc., and the case fatality rate is low.
The pathogen of filariasis is filamentous nematode, which is an epidemic parasitic disease transmitted by mosquitoes in East China, the Yangtze River Basin and the south of the Yangtze River in our country. The incubation period is generally half a year, and the early clinical manifestations are fever, allergy, acute lymph nodes and lymphangiitis, etc. Later, its adults block the lymphatic vessels and form rubber swelling, chyluria or ascites.
Can mosquitoes transmit hepatitis B?
According to years of research at home and abroad, the hepatitis B virus cannot replicate in mosquitoes at all, and the hepatitis B virus is generally digested within 14 hours after being sucked by mosquitoes in the blood. Even if it is not digested, the hepatitis B virus will not live in the mosquito's body for 48 hours, and the interval between mosquitoes sucking blood is about 72 hours. There is also evidence that when mosquitoes suck blood, they do not spit out the blood inhaled before into the body of the user. It just spits out some of its own saliva to produce some lubrication and paralysis effect.
Therefore, mosquitoes themselves do not transmit hepatitis B. However, people with hepatitis B virus carriers around them should not scratch after being bitten by mosquitoes to prevent the hepatitis B virus from entering the bloodstream through the damaged skin mucosa. At the same time, it is best to prevent hepatitis B and vaccinate against hepatitis B.
How do mosquitoes transmit diseases?
It is said that as early as 170 million years ago, the Jurassic has evolved the ancestor of mosquitoes. At present, there are about 3,000 species of mosquitoes in the world, including blood-sucking mosquitoes and non-blood-sucking mosquitoes. Among the blood-sucking mosquitoes, male mosquitoes do not suck blood, and only female mosquitoes suck blood, which is the culprit of spreading diseases.
Blood-sucking mosquitoes must bite the human body to suck the blood. When mosquitoes bite patients who suffer from malaria, Japanese encephalitis or other diseases, some substances that can cause the above diseases - pathogens, along with human blood, enter the mosquitoes and live in their bodies. When these mosquitoes with pathogens bite healthy people again, the pathogens that are parasitized in mosquitoes take the opportunity to drill into the blood of healthy people, causing healthy people to become sick.
