How is dengue fever transmitted? Who are the susceptible groups? Dengue Rapid Test Kits help you...

How is dengue fever transmitted? Who are the susceptible groups?

Dengue virus belongs to the family Flaviviridae, the genus Flaviviridae. Other viruses in this family and genus include West Nile virus, Japanese encephalitis virus, and yellow fever virus. These viruses are characterized by arboviruses, that is, viruses transmitted by mosquitoes. And it's spread by mosquitoes. Since the dengue virus is transmitted by mosquitoes, the mosquitoes that have been infected with the virus are the main source of infection. This kind of mosquito is called "epidemic mosquito". The incidence of dengue fever increases when the weather is hot, which is closely related to the activity of mosquitoes. Hot weather = more mosquitoes = more sick people.

-way for spreading

We know that the three elements of an infectious disease are: the source of infection, the route of transmission, and the susceptible population.The route of transmission is mosquito bites, which involves a question, what is the source of infection? The main hosts of dengue virus are Aedes aegypti and Aedes albopictus. After a person or monkey in the viremia stage is bitten by a mosquito (Aedes mosquito), there are probably hundreds of virus particles in the blood sucked by the mosquito. The virus can migrate to the salivary glands of mosquitoes, and when mosquitoes suck blood, the anticoagulant substances injected into people contain a large amount of viruses, which can infect people or monkeys again.And this kind of plague mosquito carries the virus for life, and can be passed down through eggs, which means that the offspring of this mosquito will all have the virus in their bodies. And the virus had little effect on the mosquitoes themselves.

As for the susceptible population, the population can be said to be generally susceptible.This means that after a person is bitten by a plague mosquito, the virus will enter the human body to replicate and multiply. But not everyone has symptoms, which should be easier to understand, just like some people have a severe cold, and some people just need to sneeze twice.

If a person is infected for the first time, it is called the first infection, and the disease is generally not serious. This disease is called dengue fever. However, there are four serotypes of dengue virus, which can be understood as four different dengue viruses. If a person recovers from the first infection, he or she will only have immune memory for this virus, that is, this virus The immune system can protect you from reinfection. But dengue viruses have a nasty feature called 'antibody-dependent enhancement of infection.

It means that if you are re-infected with other types of dengue virus, you will have more severe symptoms than the initial infection, generally called dengue hemorrhagic fever, or even dengue shock syndrome, and these two diseases are fatal.

The levels of antigens and antibodies in the two infections are completely different. NS1 is a protein of the virus and an antigen, which appears for a relatively short time. Once a person produces antibodies (IgG) that can resist NS1, NS1 will not be detected in the blood. IgM is an antibody produced in the early stage of infection, which is very meaningful for early diagnosis. However, it is IgG antibodies that produce immune memory, which takes a long time. In the second infection, the titer of IgM is very low, and the rate of IgG production is very fast. As for whether it is a good thing or a bad thing, it depends on the type of virus infected.

So how to quickly, safely and accurately detect the dengue virus? Yongyue Medical Technology Co., Ltd. provides two kinds of test kits for customers to detect dengue fever virus. For example, Dengue virus NS1 antigen, Dengue IgG/IgM rapid test kit (Colloidal Gold). Dengue Fever Rapid Test Kit can quickly and accurately detect the virus within 15 minutes. If there is suspected infection, please use the detection kit as soon as possible and seek medical treatment as soon as possible. In addition to dengue fever, our company's rapid detection series also includes monkeypox virus, influenza A and B,corona kit test, malaria, syphilis and so on. Many options, please contact our sales. Send samples for free. wish you a happy life.