Where does the Aedes mosquito that cause dengue fever "prefer" the most?

This is an automatically translated article.

The article was professionally consulted by Dr. Mang Thi Phuong Mai - Department of Medical Examination & Internal Medicine - Vinmec Nha Trang International General Hospital
The Aedes mosquito is the main carrier of viruses such as dengue, chikungunya and yellow fever in humans. Knowing where Aedes mosquitoes live can help prevent the transmission of these dangerous viruses.

1. Where does the Aedes aegypti (zebra mosquito) usually live?

The preferred environment for mosquitoes is in densely populated areas (urban). The life cycle of mosquitoes is described as follows:
Dengue-borne mosquitoes lay eggs in water containers, especially standing water in and around the house (abandoned bins, garbage, tires). damaged, bottles,...) Eggs after hatching contact with water. The viability of mosquito eggs is quite high, can live in very dry conditions and live for many months. In a favorable environment, after only 1-3 days the eggs will develop into larvae. Larvae develop into larvae within 5-8 days. After the next 2-3 days, the larva will develop into a young mosquito, and then develop into an adult mosquito. The cycle lasts from 10 to 15 days and is repetitive: adult mosquitoes lay eggs, eggs develop into larvae, and fly around. During her life, female mosquitoes lay up to 5 times, each time dozens of eggs.
Adult mosquitoes often live in dark places of the house (cabinets, under beds, behind curtains, in nets, on flower pots) because in those places, mosquitoes can avoid wind and rain, helping them to live longer. than. They like to lay their eggs in clean water containers and places where water stands: in tires, potted plants, garbage around the house. They often sting people during the day, peaking in the early morning and evening. Only female mosquitoes bite humans because they need protein to lay eggs. In any environment, humans are present.

2. Misunderstandings are common in overestimating the extent of the disease

2.1. If you get it once, you won't get it again next time People with dengue fever can still get it again in the future, even more severely than the last time because the virus that causes dengue fever exists in 4 other strains such as DEN -1, DEN-2, DEN-3, and DEN-4. Patients infected with one strain of virus can still be infected with another virus strain. This means that a person who has had dengue fever for the first time is still capable of being infected three more times by the remaining viruses. Patients infected with a virus strain have lifelong immunity to that virus strain, but no immunity to the remaining strains of the virus.
2.2. Fever reduction indicates remission High fever is just one of the symptoms that usually occurs during the first 3 days of illness. At this stage, the disease is still not the most serious and no complications appear.
From the 4th day, when the symptoms of high fever have receded is the most dangerous period of the disease. Many patients think that the disease is less dangerous, but it is this stage where serious complications can occur:
First complication: Increased vascular permeability and blood concentration. Symptoms are absent, it is only shown through laboratory indicators. In some cases, too much extravasation can lead to warning signs such as fatigue, pain in the liver, nausea and vomiting. Young children may be irritable, struggling, urinating less, or refusing to breastfeed. All these cases need to go to the hospital for early resuscitation to avoid life-threatening danger. Second complication: Thrombocytopenia bleeding. Patients may have symptoms such as nosebleeds, bleeding gums, bleeding under the skin. These cases need to go to medical facilities to do tests to assess the degree of thrombocytopenia and to be considered for platelet transfusion if necessary. 2.3. Contact with people with dengue fever will be infected Dengue fever is only spread by mosquitoes that bite infected people, then transmit the disease to healthy people through bites and absolutely not through other ways such as respiratory, epidemic. secretions or direct contact with an infected person.
2.4 . Take anti-inflammatory drugs such as Aspirin and ibuprofen for dengue fever Two drugs commonly used to treat symptoms of muscle pain, joint pain, headache - are also the initial symptoms of dengue fever. However, in dengue fever, two drugs, Aspirin and Ibuprofen, only make the condition worse, possibly life-threatening severe stomach bleeding. Two drugs, Aspirin and Ibuprofen, work to prevent platelet aggregation and blood clotting, while dengue patients have a clotting disorder that makes the body bleed easily.
Therefore, when suspected of having dengue fever, absolutely do not take the two drugs mentioned above.

2.5. Mosquitoes that transmit disease only appear in a polluted and unsanitary environment. Aedes mosquitoes not only live in unsanitary places such as ponds and sewers, but can also appear in your own home such as: water tanks, vases, etc. flowers, rain water on the debris.
Therefore, it is necessary to clean the house and the area around the house regularly to limit the habitat of mosquitoes. For example, change the water, clean things in the house, don't let the water stay too long in the items, spray insecticides to kill mosquitoes.

3. Effective Aedes Mosquito Control Measures

Currently, there are no measures to completely eliminate mosquitoes. Some commonly used measures such as bed nets, using electric nets, releasing fish, rinsing water containers, applying creams only partially limit the number of mosquitoes or the possibility of mosquito bites. Even the use of aerosols or chemicals has an immediate effect at the time of use. Then, if the weather is favorable, mosquitoes will breed again.
However, maintaining the habit of using mosquito repellant and killing methods still plays an important role in the prevention of dengue fever and other infectious diseases.

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