The May Day holiday is approaching, and when planning a trip (especially an outbound trip), it is important to remember to guard against dengue fever, a disease transmitted by mosquito bites.
From May, dengue fever enters the epidemic season
May ~ November every year is the epidemic season for dengue fever transmission, and the peak of the epidemic is July ~ September.
Specifically, dengue fever is an acute insect-borne infection caused by dengue virus, mainly transmitted by the bite of Aedes mosquitoes, and the epidemic area is mainly distributed in tropical and subtropical regions, with Southeast Asia, the Western Pacific and the Americas being the most serious.
Dengue fever is mainly prevalent in Guangdong, Guangxi, Hainan, Fujian, Zhejiang and other regions in mainland China, and has typical imported and sudden characteristics. The disease spreads rapidly, has a high incidence, and is generally susceptible to the population.
I would like to remind everyone that if you have fever symptoms within 2 weeks after returning from travel, please go to a regular hospital immediately for medical treatment and inform your travel history to avoid delaying the illness and causing severe illness.
Dengue fever is mainly transmitted by "flower mosquitoes".
Dengue fever is mainly transmitted by the route of "patient→ Aedes mosquito → others". Diseases are generally not transmitted directly from person to person.
At present, dengue virus is mainly transmitted by Aedes albopictus and Aedes aegypti (commonly known as "flower mosquito"). After dengue fever patients or latent infected people are bitten by Aedes mosquitoes, the virus generally needs 8~10 days of multiplication in the body of Aedes mosquitoes before the virus can be transmitted to humans through the bite.
The mainland population is generally susceptible to dengue virus, and the incubation period after infection is generally 1~14 days (most are 5~9 days), but some people do not develop the disease (i.e., latent infection). Aedes mosquitoes, the vector that can transmit dengue virus, is widely distributed on the continent and may spread rapidly after importation.
There are 4 typical symptoms of dengue fever
The typical symptoms of dengue fever can be summarized as: sudden high fever + three red signs + three pains + rash.
1
Sudden high fever
Body temperature can rise to 39 or 40 degrees Celsius in 24 to 36 hours.
2
Three red signs
That is, flushing of the face, neck, and chest.
3
Three pains
Severe headache, generalized joint pain, muscle aches.
4
rash
Congestive or punctate hemorrhagic rash on the limbs, trunk, or head and face.
Avoiding mosquito bites is key to prevention
What can we do to stay away from dengue fever in our lives? Avoiding mosquito bites is the key!
When you go to dengue-endemic areas for outdoor activities, try to choose light-coloured long-sleeved trousers and use mosquito repellent or other mosquito repellent drugs as much as possible.
In addition, to prevent dengue fever, the following mosquito prevention and control work should be done.
1. Clean up stagnant water in your home. For example, water plants should be changed regularly (at least once a week) and the bottom of the pot should not be left with stagnant water.
2. Keep ventilation dry.
3. Install screen doors and windows.
4. Use mosquito nets.
5. Use mosquito control products.
It is important to note that there is currently no specific drug for dengue fever, and treatment focuses on pain control, timely fluid rehydration, prevention of bleeding, and early mosquito prevention.
If you accidentally get infected with dengue virus, don't panic too much. Patients with dengue fever generally have a good prognosis and can basically recover after timely treatment, but there are also a few reports of deaths in severe cases.
Source: Healthy China
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Editor's review: Feicheng Health Education Center