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Know About Dengue Fever Infectious Diusease


Dengue fever is not terrible, it is terrible that you don't know it yet!


Dengue fever is a common mosquito-borne disease in summer and autumn. People are transmitted by mosquito bites, and no infection occurs between people. Mosquito control is the key to preventing dengue fever.

Dengue fever science

What is dengue fever?

Dengue fever is a disease caused by dengue virus and transmitted by the bite of Aedes mosquito (commonly known as flower mosquito), with fever, rash, and general pain as the main symptoms. It is usually high in summer and autumn.

What is the route of transmission of dengue fever?

The main vectors of dengue fever are Aedes aegypti and Aedes albopictus. The virus is transmitted to humans by the bite of a mosquito. Mosquitoes usually acquire the virus when they inhale the blood of infected humans. Infected mosquitoes can transmit the virus throughout their lives, and a few can pass the virus to their offspring via eggs.

Where is the mosquito bite susceptible?


Aedes mosquitoes mainly breed in various artificial and plant container stagnant water, such as: abandoned water tanks and canisters, bamboo tubes in bamboo forests, tree holes, waste tires, and pickled ceramic ware. Most people invade the human body outdoors. The peak of blood sucking is from 4 to 5 pm, and the second peak is from 9 to 10 am. The active flight range is generally 50 meters to 100 meters near the breeding ground, and rarely exceeds 200 meters. Therefore, it is more likely to be bitten within 100 meters of its breeding ground during its peak hours of activity.

Is there a specific medicine that can be treated?


Seek medical attention when dengue fever develops. Generally, it can be cured by symptomatic treatment, and there will be no other health effects after the cure, and the mortality rate is very low.

Fever from Dengue Virus Infection

 What are the main symptoms of dengue fever?


1. Sudden high fever: the body temperature rises to 39 ° C to 40 ° C within a day or two, and the high fever usually lasts for a week;

2. body pain: headache, orbital pain, muscle joints and bone pain, the whole person feels very tired;

3. Redness: The skin on the face, neck, chest and limbs is red, looks like "drunk", and even conjunctival congestion, superficial lymphadenopathy, gums and other unexplained bleeding occur.

4, rash: mainly measles-like and hemorrhagic rash, not higher than the skin.

What are the clinical manifestations of dengue fever?


The incubation period of dengue fever is generally 3 to 15 days, and most of them are 5 to 8 days.

Dengue virus infection can manifest as asymptomatic recessive infection, non-severe infection and severe infection. Dengue fever is a systemic disease with complex clinical manifestations. The typical course of dengue fever is divided into three phases, namely the acute fever phase, the extreme phase and the recovery phase. According to the severity of the disease, dengue infection can be divided into two types of clinical dengue fever and severe dengue fever.

Acute fever: Patients usually have an acute onset, and the first symptoms are fever, which can be accompanied by chills, and the body temperature can reach 40 ° C within 24 hours. In some cases, the body temperature dropped to normal after 3 to 5 days, and rose again after 1 to 3 days, which is called a bimodal fever type. Fever can be accompanied by headache, general muscle, bone and joint pain, marked weakness, and nausea, vomiting, abdominal pain, diarrhea and other gastrointestinal symptoms.

The acute fever usually lasts 2 to 7 days. Congestive rash or spotting hemorrhage appeared on the face and limbs on the 3rd to 6th days of the disease course. Typical rashes are needle-like bleeding spots and "skin-like island" manifestations seen on the extremities. Bleeding can occur in varying degrees, such as subcutaneous bleeding, petechiae at the injection site, bleeding gums, epistaxis, and positive beam tests.

Extreme stage: Some patients with persistent high fever do not alleviate, or their condition worsens after fever, may cause significant plasma leakage due to increased capillary permeability, and severe cases may occur shock and other important organ damage. The polar phase usually occurs on the 3rd to 8th days of the disease. Severe warning signs such as severe abdominal pain and persistent vomiting often indicate the beginning of the extreme phase.
Vector Borne Disease Infection from Dengue Virus


Recovery period: 2 to 3 days after the extreme period, the patient's condition improves, gastrointestinal symptoms ease, and he enters the recovery period. Some patients see needle-like bleeding points, more common in the lower extremities, and may have itchy skin. The white blood cell count started to rise and the platelet count gradually recovered.

Most patients show general dengue fever, a few patients develop severe dengue fever, and some patients have only a fever and recovery period.

I have been diagnosed with dengue fever, what to do?


If dengue fever is diagnosed, mosquito quarantine treatment is needed in the hospital to prevent the virus from being transmitted to family members or other people through mosquito bites. The isolation time is generally about 5 days.

The course of illness is more than 5 days, and the heat can be released for more than 24 hours.

Patients with dengue fever can be discharged for more than 24 hours while their clinical symptoms are relieved.

What is the prognosis for dengue fever?


Dengue fever is a self-limiting disease, usually with a good prognosis and a low mortality rate.

Factors affecting the prognosis include the patient's previous infection with dengue virus, age, underlying diseases, and complications. A few cases of severe dengue fever can die from vital organ failure.

To protect your health, please pay attention to hygiene!




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