Hainan Province dengue fever alert

September 2019, a dengue fever alert was announced in Xiuying District, Haikou City.

From September 5 to September 10 a total of 77 cases were reported in Haikou City, including 69 cases in the Wuyuan he area of ​​Xiuying, Haikou and 8 cases in Xiuying, shuchang village. There were no serious cases or deaths. 

All 77 cases have been isolated and treated, and their condition is stable.

On September 7, an emergency response, prevention and control deployment meeting was held to organize a health campaign in the province to reduce the density of mosquitoes. 

On September 9th, it was upgraded to a Level II response.

September 9th an expert rescue group was set up to implement fixed-point treatment for patients. A joint prevention and control mechanism was established to strengthen the prevention and control of the fever. The current epidemic situation is reported as controllable.

What is dengue fever?

Aedes mosquito
Aedes mosquito

Dengue is a disease caused by the bite of a mosquito infected with any one of four specific Dengue viruses. It causes high fever, severe headache, pain behind the eye, joint pain, and muscle pain.

Map of Dengue fever spread
Map of Dengue fever risk areas

The mosquitoes that carry this disease are mainly in tropical areas and outbreaks usually occur during the rainy seasons in areas with high numbers of infected Aedes mosquito.

How is dengue spread?

A mosquito becomes infected when it bites a person who has dengue in his or her blood. After about a week, the mosquito is able to spread the disease to another person when it bites. Direct spread of dengue from one person to another does not occur.

What are the signs and symptoms of dengue fever?

dengue fever symptoms
Dengue fever symptoms

Dengue fever symptoms include sudden onset of a fever that may last from 2 to 7 days with intense headache, joint and muscle pain, and a rash. Mild bleeding of the nose or gums may occur. The hemorrhagic form of dengue fever is more severe and symptoms may include loss of appetite, persistent vomiting, high fever, headache, difficulty breathing, and abdominal pain. This may lead to shock and circulatory failure.

Dengue fever may occur from 3 to 14 days after being bitten by an infected mosquito, but usually within 4 to 7 days.

How is dengue fever diagnosed?

Symptoms and travel history can cause a health care provider to suspect dengue fever. Laboratory tests will be needed to confirm diagnosis by seeing if the virus or antibodies against the virus are present in the person’s blood.

What is the treatment for dengue fever?

There is no specific treatment available. Intravenous fluids and oxygen therapy are often used for patients who become very ill. Access to proper medical care reduces the likelihood that the disease will become more serious.

Does past infection with dengue virus make a person immune?

Infection with one of the four strains of dengue virus usually produces immunity to that strain but does not provide protection against the other strains.

What can be done to prevent the spread of dengue fever?

Mosquito repellent
Mosquito repellents may contain DEET which is a carcinogen

There are not yet any approved vaccines to prevent infection with dengue virus. The most effective protective measures are those that avoid mosquito bites. Use of insect repellents may be helpful in minimizing exposure. More information on repellents can be found at Environmental Protection Agency – insect-repellents.

In addition:

Be sure to follow label directions.

Try to reduce the use of repellents by dressing in long sleeves and pants tucked into socks or boots.

Children should only handle repellents with adult supervision. Adults should apply repellents to their own hands first and then gently spread on the child’s exposed skin. Avoid applying directly to children’s hands.

After returning indoors, wash your child’s treated skin and clothing with soap and water or give the child a bath.

Do not apply near eyes, nose or mouth and use sparingly around ears.

After returning indoors, wash treated skin with soap and water.

Source: Chinadaily

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